rvl/test-docker.nix

## test-docker.nix
# How to build docker images (NIX_PATH and hydra cache required when building off master branch)
#  export NIX_PATH=$HOME/dev
#  nix-build --option extra-binary-caches http://hydra.nixos.org/ test-docker.nix | xargs -n1 docker load -i

with import <nixpkgs> {};

rec {
  # 1. basic example
  bash = dockerTools.buildImage {
    name = "bash";
    contents = bashInteractive;
  };

  # 2. service example, layered on another image
  redis = dockerTools.buildImage {
    name = "redis";
    tag = "latest";

    # for example's sake, we can layer redis on top of bash or debian
    fromImage = bash;
    # fromImage = debian;

    contents = pkgs.redis;
    runAsRoot = ''
      mkdir -p /data
    '';

    config = {
      Cmd = [ "/bin/redis-server" ];
      WorkingDir = "/data";
      Volumes = {
        "/data" = {};
      };
    };
  };

  # 3. another service example
  nginx = let
    nginxPort = "80";
    nginxConf = writeText "nginx.conf" ''
      user nginx nginx;
      daemon off;
      error_log /dev/stdout info;
      pid /dev/null;
      events {}
      http {
        access_log /dev/stdout;
        server {
          listen ${nginxPort};
          index index.html;
          location / {
            root ${nginxWebRoot};
          }
        }
      }
    '';
    nginxWebRoot = writeTextDir "index.html" ''
      <html><body><h1>Hello from NGINX</h1></body></html>
    '';
  in
  dockerTools.buildImage {
    name = "nginx-container";
    contents = pkgs.nginx;

    runAsRoot = ''
      #!${stdenv.shell}
      ${dockerTools.shadowSetup}
      groupadd --system nginx
      useradd --system --gid nginx nginx
    '';

    config = {
      Cmd = [ "nginx" "-c" nginxConf ];
      ExposedPorts = {
        "${nginxPort}/tcp" = {};
      };
    };
  };

  # 4. example of pulling an image. could be used as a base for other images
  debian = dockerTools.pullImage {
    imageName = "debian";
    imageTag = "jessie";
    # this hash will need change if the tag is updated at docker hub
    sha256 = "18kd495lc2k35h03bpcbdjnix17nlqbwf6nmq3sb161blf0dk14q";
  };

  # 5. example of multiple contents, emacs and vi happily coexisting
  editors = dockerTools.buildImage {
    name = "editors";
    contents = [
      pkgs.coreutils
      pkgs.bash
      pkgs.emacs
      pkgs.vim
      pkgs.nano
    ];
  };
}
	# How to build docker images (NIX_PATH and hydra cache required when building off master branch)
	# export NIX_PATH=$HOME/dev
	# nix-build --option extra-binary-caches http://hydra.nixos.org/ test-docker.nix \| xargs -n1 docker load -i

	with import <nixpkgs> {};

	rec {
	# 1. basic example
	bash = dockerTools.buildImage {
	name = "bash";
	contents = bashInteractive;
	};

	# 2. service example, layered on another image
	redis = dockerTools.buildImage {
	name = "redis";
	tag = "latest";

	# for example's sake, we can layer redis on top of bash or debian
	fromImage = bash;
	# fromImage = debian;

	contents = pkgs.redis;
	runAsRoot = ''
	mkdir -p /data
	'';

	config = {
	Cmd = [ "/bin/redis-server" ];
	WorkingDir = "/data";
	Volumes = {
	"/data" = {};
	};
	};
	};

	# 3. another service example
	nginx = let
	nginxPort = "80";
	nginxConf = writeText "nginx.conf" ''
	user nginx nginx;
	daemon off;
	error_log /dev/stdout info;
	pid /dev/null;
	events {}
	http {
	access_log /dev/stdout;
	server {
	listen ${nginxPort};
	index index.html;
	location / {
	root ${nginxWebRoot};
	}
	}
	}
	'';
	nginxWebRoot = writeTextDir "index.html" ''
	<html><body><h1>Hello from NGINX</h1></body></html>
	'';
	in
	dockerTools.buildImage {
	name = "nginx-container";
	contents = pkgs.nginx;

	runAsRoot = ''
	#!${stdenv.shell}
	${dockerTools.shadowSetup}
	groupadd --system nginx
	useradd --system --gid nginx nginx
	'';

	config = {
	Cmd = [ "nginx" "-c" nginxConf ];
	ExposedPorts = {
	"${nginxPort}/tcp" = {};
	};
	};
	};

	# 4. example of pulling an image. could be used as a base for other images
	debian = dockerTools.pullImage {
	imageName = "debian";
	imageTag = "jessie";
	# this hash will need change if the tag is updated at docker hub
	sha256 = "18kd495lc2k35h03bpcbdjnix17nlqbwf6nmq3sb161blf0dk14q";
	};

	# 5. example of multiple contents, emacs and vi happily coexisting
	editors = dockerTools.buildImage {
	name = "editors";
	contents = [
	pkgs.coreutils
	pkgs.bash
	pkgs.emacs
	pkgs.vim
	pkgs.nano
	];
	};
	}