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b7749c7671
Bash's standard behavior of not propagating non-zero exit codes through a pipeline is unexpected and almost universally unwanted. Default to setting `pipefail` for the command being run; it can still be turned off by prefixing the pipeline with `set +o pipefail` if needed. Also, set `errexit` and `nonunset` options to make the first command of consecutive commands separated by `;` fail, and disallow dereferencing unset variables respectively.
383 lines
16 KiB
Nix
383 lines
16 KiB
Nix
# this test creates a simple GNU image with docker tools and sees if it executes
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import ./make-test-python.nix ({ pkgs, ... }: {
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name = "docker-tools";
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meta = with pkgs.lib.maintainers; {
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maintainers = [ lnl7 roberth ];
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};
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nodes = {
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docker = { ... }: {
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virtualisation = {
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diskSize = 2048;
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docker.enable = true;
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};
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};
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};
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testScript = with pkgs.dockerTools; ''
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unix_time_second1 = "1970-01-01T00:00:01Z"
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docker.wait_for_unit("sockets.target")
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with subtest("includeStorePath"):
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with subtest("assumption"):
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docker.succeed("${examples.helloOnRoot} | docker load")
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docker.succeed("docker run --rm hello | grep -i hello")
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docker.succeed("docker image rm hello:latest")
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with subtest("includeStorePath = false; breaks example"):
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docker.succeed("${examples.helloOnRootNoStore} | docker load")
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docker.fail("docker run --rm hello | grep -i hello")
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docker.succeed("docker image rm hello:latest")
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with subtest("includeStorePath = false; works with mounted store"):
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docker.succeed("${examples.helloOnRootNoStore} | docker load")
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docker.succeed("docker run --rm --volume ${builtins.storeDir}:${builtins.storeDir}:ro hello | grep -i hello")
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docker.succeed("docker image rm hello:latest")
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with subtest("Ensure Docker images use a stable date by default"):
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docker.succeed(
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"docker load --input='${examples.bash}'"
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)
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assert unix_time_second1 in docker.succeed(
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"docker inspect ${examples.bash.imageName} "
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+ "| ${pkgs.jq}/bin/jq -r .[].Created",
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)
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docker.succeed("docker run --rm ${examples.bash.imageName} bash --version")
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# Check imageTag attribute matches image
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docker.succeed("docker images --format '{{.Tag}}' | grep -F '${examples.bash.imageTag}'")
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docker.succeed("docker rmi ${examples.bash.imageName}")
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# The remaining combinations
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with subtest("Ensure imageTag attribute matches image"):
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docker.succeed(
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"docker load --input='${examples.bashNoTag}'"
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)
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docker.succeed(
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"docker images --format '{{.Tag}}' | grep -F '${examples.bashNoTag.imageTag}'"
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)
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docker.succeed("docker rmi ${examples.bashNoTag.imageName}:${examples.bashNoTag.imageTag}")
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docker.succeed(
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"docker load --input='${examples.bashNoTagLayered}'"
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)
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docker.succeed(
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"docker images --format '{{.Tag}}' | grep -F '${examples.bashNoTagLayered.imageTag}'"
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)
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docker.succeed("docker rmi ${examples.bashNoTagLayered.imageName}:${examples.bashNoTagLayered.imageTag}")
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docker.succeed(
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"${examples.bashNoTagStreamLayered} | docker load"
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)
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docker.succeed(
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"docker images --format '{{.Tag}}' | grep -F '${examples.bashNoTagStreamLayered.imageTag}'"
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)
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docker.succeed(
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"docker rmi ${examples.bashNoTagStreamLayered.imageName}:${examples.bashNoTagStreamLayered.imageTag}"
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)
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docker.succeed(
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"docker load --input='${examples.nixLayered}'"
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)
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docker.succeed("docker images --format '{{.Tag}}' | grep -F '${examples.nixLayered.imageTag}'")
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docker.succeed("docker rmi ${examples.nixLayered.imageName}")
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with subtest(
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"Check if the nix store is correctly initialized by listing "
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"dependencies of the installed Nix binary"
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):
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docker.succeed(
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"docker load --input='${examples.nix}'",
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"docker run --rm ${examples.nix.imageName} nix-store -qR ${pkgs.nix}",
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"docker rmi ${examples.nix.imageName}",
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)
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with subtest(
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"Ensure (layered) nix store has correct permissions "
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"and that the container starts when its process does not have uid 0"
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):
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docker.succeed(
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"docker load --input='${examples.bashLayeredWithUser}'",
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"docker run -u somebody --rm ${examples.bashLayeredWithUser.imageName} ${pkgs.bash}/bin/bash -c 'test 555 == $(stat --format=%a /nix) && test 555 == $(stat --format=%a /nix/store)'",
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"docker rmi ${examples.bashLayeredWithUser.imageName}",
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)
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with subtest("The nix binary symlinks are intact"):
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docker.succeed(
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"docker load --input='${examples.nix}'",
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"docker run --rm ${examples.nix.imageName} ${pkgs.bash}/bin/bash -c 'test nix == $(readlink ${pkgs.nix}/bin/nix-daemon)'",
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"docker rmi ${examples.nix.imageName}",
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)
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with subtest("The nix binary symlinks are intact when the image is layered"):
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docker.succeed(
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"docker load --input='${examples.nixLayered}'",
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"docker run --rm ${examples.nixLayered.imageName} ${pkgs.bash}/bin/bash -c 'test nix == $(readlink ${pkgs.nix}/bin/nix-daemon)'",
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"docker rmi ${examples.nixLayered.imageName}",
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)
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with subtest("The pullImage tool works"):
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docker.succeed(
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"docker load --input='${examples.nixFromDockerHub}'",
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"docker run --rm nix:2.2.1 nix-store --version",
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"docker rmi nix:2.2.1",
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)
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with subtest("runAsRoot and entry point work"):
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docker.succeed(
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"docker load --input='${examples.nginx}'",
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"docker run --name nginx -d -p 8000:80 ${examples.nginx.imageName}",
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)
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docker.wait_until_succeeds("curl -f http://localhost:8000/")
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docker.succeed(
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"docker rm --force nginx",
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"docker rmi '${examples.nginx.imageName}'",
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)
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with subtest("A pulled image can be used as base image"):
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docker.succeed(
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"docker load --input='${examples.onTopOfPulledImage}'",
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"docker run --rm ontopofpulledimage hello",
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"docker rmi ontopofpulledimage",
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)
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with subtest("Regression test for issue #34779"):
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docker.succeed(
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"docker load --input='${examples.runAsRootExtraCommands}'",
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"docker run --rm runasrootextracommands cat extraCommands",
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"docker run --rm runasrootextracommands cat runAsRoot",
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"docker rmi '${examples.runAsRootExtraCommands.imageName}'",
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)
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with subtest("Ensure Docker images can use an unstable date"):
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docker.succeed(
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"docker load --input='${examples.unstableDate}'"
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)
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assert unix_time_second1 not in docker.succeed(
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"docker inspect ${examples.unstableDate.imageName} "
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+ "| ${pkgs.jq}/bin/jq -r .[].Created"
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)
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with subtest("Ensure Layered Docker images can use an unstable date"):
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docker.succeed(
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"docker load --input='${examples.unstableDateLayered}'"
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)
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assert unix_time_second1 not in docker.succeed(
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"docker inspect ${examples.unstableDateLayered.imageName} "
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+ "| ${pkgs.jq}/bin/jq -r .[].Created"
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)
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with subtest("Ensure Layered Docker images work"):
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docker.succeed(
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"docker load --input='${examples.layered-image}'",
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"docker run --rm ${examples.layered-image.imageName}",
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"docker run --rm ${examples.layered-image.imageName} cat extraCommands",
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)
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with subtest("Ensure images built on top of layered Docker images work"):
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docker.succeed(
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"docker load --input='${examples.layered-on-top}'",
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"docker run --rm ${examples.layered-on-top.imageName}",
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)
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with subtest("Ensure layered images built on top of layered Docker images work"):
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docker.succeed(
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"docker load --input='${examples.layered-on-top-layered}'",
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"docker run --rm ${examples.layered-on-top-layered.imageName}",
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)
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def set_of_layers(image_name):
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return set(
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docker.succeed(
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f"docker inspect {image_name} "
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+ "| ${pkgs.jq}/bin/jq -r '.[] | .RootFS.Layers | .[]'"
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).split()
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)
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with subtest("Ensure layers are shared between images"):
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docker.succeed(
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"docker load --input='${examples.another-layered-image}'"
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)
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layers1 = set_of_layers("${examples.layered-image.imageName}")
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layers2 = set_of_layers("${examples.another-layered-image.imageName}")
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assert bool(layers1 & layers2)
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with subtest("Ensure order of layers is correct"):
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docker.succeed(
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"docker load --input='${examples.layersOrder}'"
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)
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for index in 1, 2, 3:
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assert f"layer{index}" in docker.succeed(
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f"docker run --rm ${examples.layersOrder.imageName} cat /tmp/layer{index}"
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)
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with subtest("Ensure environment variables are correctly inherited"):
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docker.succeed(
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"docker load --input='${examples.environmentVariables}'"
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)
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out = docker.succeed("docker run --rm ${examples.environmentVariables.imageName} env")
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env = out.splitlines()
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assert "FROM_PARENT=true" in env, "envvars from the parent should be preserved"
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assert "FROM_CHILD=true" in env, "envvars from the child should be preserved"
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assert "LAST_LAYER=child" in env, "envvars from the child should take priority"
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with subtest("Ensure environment variables of layered images are correctly inherited"):
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docker.succeed(
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"docker load --input='${examples.environmentVariablesLayered}'"
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)
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out = docker.succeed("docker run --rm ${examples.environmentVariablesLayered.imageName} env")
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env = out.splitlines()
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assert "FROM_PARENT=true" in env, "envvars from the parent should be preserved"
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assert "FROM_CHILD=true" in env, "envvars from the child should be preserved"
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assert "LAST_LAYER=child" in env, "envvars from the child should take priority"
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with subtest(
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"Ensure inherited environment variables of layered images are correctly resolved"
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):
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# Read environment variables as stored in image config
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config = docker.succeed(
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"tar -xOf ${examples.environmentVariablesLayered} manifest.json | ${pkgs.jq}/bin/jq -r .[].Config"
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).strip()
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out = docker.succeed(
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f"tar -xOf ${examples.environmentVariablesLayered} {config} | ${pkgs.jq}/bin/jq -r '.config.Env | .[]'"
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)
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env = out.splitlines()
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assert (
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sum(entry.startswith("LAST_LAYER") for entry in env) == 1
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), "envvars overridden by child should be unique"
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with subtest("Ensure image with only 2 layers can be loaded"):
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docker.succeed(
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"docker load --input='${examples.two-layered-image}'"
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)
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with subtest(
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"Ensure the bulk layer doesn't miss store paths (regression test for #78744)"
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):
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docker.succeed(
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"docker load --input='${pkgs.dockerTools.examples.bulk-layer}'",
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# Ensure the two output paths (ls and hello) are in the layer
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"docker run bulk-layer ls /bin/hello",
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)
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with subtest(
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"Ensure the bulk layer with a base image respects the number of maxLayers"
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):
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docker.succeed(
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"docker load --input='${pkgs.dockerTools.examples.layered-bulk-layer}'",
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# Ensure the image runs correctly
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"docker run layered-bulk-layer ls /bin/hello",
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)
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# Ensure the image has the correct number of layers
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assert len(set_of_layers("layered-bulk-layer")) == 4
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with subtest("Ensure correct behavior when no store is needed"):
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# This check tests that buildLayeredImage can build images that don't need a store.
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docker.succeed(
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"docker load --input='${pkgs.dockerTools.examples.no-store-paths}'"
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)
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# This check may be loosened to allow an *empty* store rather than *no* store.
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docker.succeed("docker run --rm no-store-paths ls /")
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docker.fail("docker run --rm no-store-paths ls /nix/store")
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with subtest("Ensure buildLayeredImage does not change store path contents."):
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docker.succeed(
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"docker load --input='${pkgs.dockerTools.examples.filesInStore}'",
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"docker run --rm file-in-store nix-store --verify --check-contents",
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"docker run --rm file-in-store |& grep 'some data'",
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)
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with subtest("Ensure cross compiled image can be loaded and has correct arch."):
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docker.succeed(
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"docker load --input='${pkgs.dockerTools.examples.cross}'",
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)
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assert (
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docker.succeed(
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"docker inspect ${pkgs.dockerTools.examples.cross.imageName} "
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+ "| ${pkgs.jq}/bin/jq -r .[].Architecture"
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).strip()
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== "${if pkgs.system == "aarch64-linux" then "amd64" else "arm64"}"
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)
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with subtest("buildLayeredImage doesn't dereference /nix/store symlink layers"):
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docker.succeed(
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"docker load --input='${examples.layeredStoreSymlink}'",
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"docker run --rm ${examples.layeredStoreSymlink.imageName} bash -c 'test -L ${examples.layeredStoreSymlink.passthru.symlink}'",
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"docker rmi ${examples.layeredStoreSymlink.imageName}",
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)
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with subtest("buildImage supports registry/ prefix in image name"):
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docker.succeed(
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"docker load --input='${examples.prefixedImage}'"
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)
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docker.succeed(
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"docker images --format '{{.Repository}}' | grep -F '${examples.prefixedImage.imageName}'"
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)
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with subtest("buildLayeredImage supports registry/ prefix in image name"):
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docker.succeed(
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"docker load --input='${examples.prefixedLayeredImage}'"
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)
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docker.succeed(
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"docker images --format '{{.Repository}}' | grep -F '${examples.prefixedLayeredImage.imageName}'"
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)
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with subtest("buildLayeredImage supports running chown with fakeRootCommands"):
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docker.succeed(
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"docker load --input='${examples.layeredImageWithFakeRootCommands}'"
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)
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docker.succeed(
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"docker run --rm ${examples.layeredImageWithFakeRootCommands.imageName} sh -c 'stat -c '%u' /home/jane | grep -E ^1000$'"
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)
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with subtest("Ensure docker load on merged images loads all of the constituent images"):
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docker.succeed(
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"docker load --input='${examples.mergedBashAndRedis}'"
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)
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docker.succeed(
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"docker images --format '{{.Repository}}-{{.Tag}}' | grep -F '${examples.bash.imageName}-${examples.bash.imageTag}'"
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)
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docker.succeed(
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"docker images --format '{{.Repository}}-{{.Tag}}' | grep -F '${examples.redis.imageName}-${examples.redis.imageTag}'"
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)
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docker.succeed("docker run --rm ${examples.bash.imageName} bash --version")
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docker.succeed("docker run --rm ${examples.redis.imageName} redis-cli --version")
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docker.succeed("docker rmi ${examples.bash.imageName}")
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docker.succeed("docker rmi ${examples.redis.imageName}")
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with subtest(
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"Ensure docker load on merged images loads all of the constituent images (missing tags)"
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):
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docker.succeed(
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"docker load --input='${examples.mergedBashNoTagAndRedis}'"
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)
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docker.succeed(
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"docker images --format '{{.Repository}}-{{.Tag}}' | grep -F '${examples.bashNoTag.imageName}-${examples.bashNoTag.imageTag}'"
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)
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docker.succeed(
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"docker images --format '{{.Repository}}-{{.Tag}}' | grep -F '${examples.redis.imageName}-${examples.redis.imageTag}'"
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)
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# we need to explicitly specify the generated tag here
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docker.succeed(
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"docker run --rm ${examples.bashNoTag.imageName}:${examples.bashNoTag.imageTag} bash --version"
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)
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docker.succeed("docker run --rm ${examples.redis.imageName} redis-cli --version")
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docker.succeed("docker rmi ${examples.bashNoTag.imageName}:${examples.bashNoTag.imageTag}")
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docker.succeed("docker rmi ${examples.redis.imageName}")
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with subtest("mergeImages preserves owners of the original images"):
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docker.succeed(
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"docker load --input='${examples.mergedBashFakeRoot}'"
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)
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docker.succeed(
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"docker run --rm ${examples.layeredImageWithFakeRootCommands.imageName} sh -c 'stat -c '%u' /home/jane | grep -E ^1000$'"
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)
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'';
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})
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