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01174c5f4d
Before this patch, a VM was used to spawn docker that pulled the VM. Now, the tool Skopeo does this job well so we can simplify our dockerTools since we doesn't need Docker anymore:) This also fixe the regression described in https://github.com/NixOS/nixpkgs/issues/29271 : cntlm proxy doesn't work in 17.09 while it worked in 17.03. Note Skopeo doesn't produce the same output than docker pull so, we have to update sha.
105 lines
2.3 KiB
Nix
105 lines
2.3 KiB
Nix
# Examples of using the docker tools to build packages.
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#
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# This file defines several docker images. In order to use an image,
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# build its derivation with `nix-build`, and then load the result with
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# `docker load`. For example:
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#
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# $ nix-build '<nixpkgs>' -A dockerTools.examples.redis
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# $ docker load < result
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{ pkgs, buildImage, pullImage, shadowSetup }:
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rec {
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# 1. basic example
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bash = buildImage {
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name = "bash";
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contents = pkgs.bashInteractive;
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};
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# 2. service example, layered on another image
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redis = buildImage {
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name = "redis";
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tag = "latest";
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# for example's sake, we can layer redis on top of bash or debian
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fromImage = bash;
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# fromImage = debian;
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contents = pkgs.redis;
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runAsRoot = ''
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mkdir -p /data
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'';
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config = {
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Cmd = [ "/bin/redis-server" ];
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WorkingDir = "/data";
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Volumes = {
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"/data" = {};
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};
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};
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};
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# 3. another service example
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nginx = let
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nginxPort = "80";
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nginxConf = pkgs.writeText "nginx.conf" ''
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user nginx nginx;
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daemon off;
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error_log /dev/stdout info;
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pid /dev/null;
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events {}
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http {
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access_log /dev/stdout;
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server {
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listen ${nginxPort};
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index index.html;
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location / {
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root ${nginxWebRoot};
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}
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}
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}
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'';
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nginxWebRoot = pkgs.writeTextDir "index.html" ''
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<html><body><h1>Hello from NGINX</h1></body></html>
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'';
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in
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buildImage {
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name = "nginx-container";
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contents = pkgs.nginx;
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runAsRoot = ''
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#!${pkgs.stdenv.shell}
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${shadowSetup}
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groupadd --system nginx
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useradd --system --gid nginx nginx
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'';
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config = {
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Cmd = [ "nginx" "-c" nginxConf ];
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ExposedPorts = {
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"${nginxPort}/tcp" = {};
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};
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};
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};
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# 4. example of pulling an image. could be used as a base for other images
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nix = pullImage {
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imageName = "nixos/nix";
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imageTag = "1.11";
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# this hash will need change if the tag is updated at docker hub
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sha256 = "18xvcnl0yvj9kfi5bkimrhhjaa8xhm3jhshh2xd7c0sbfrmfqzvi";
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};
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# 5. example of multiple contents, emacs and vi happily coexisting
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editors = buildImage {
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name = "editors";
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contents = [
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pkgs.coreutils
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pkgs.bash
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pkgs.emacs
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pkgs.vim
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pkgs.nano
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];
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};
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}
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