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add examples file

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This commit is contained in:
Allen Nelson 2016-10-03 12:07:33 -05:00
parent 4abe579250
commit b9007c8d83
2 changed files with 109 additions and 0 deletions
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5
pkgs/build-support/docker/default.nix
View file

@ -7,6 +7,7 @@
go,
jshon,
lib,
pkgs,
pigz,
runCommand,
shadow,
@ -23,6 +24,10 @@
rec {
examples = import ./examples.nix {
inherit pkgs buildImage pullImage shadowSetup;
};
pullImage = callPackage ./pull.nix {};
# We need to sum layer.tar, not a directory, hence tarsum instead of nix-hash.

104
pkgs/build-support/docker/examples.nix Normal file
View file

@ -0,0 +1,104 @@
# Examples of using the docker tools to build packages.
#
# This file defines several docker images. In order to use an image,
# build its derivation with `nix-build`, and then load the result with
# `docker load`. For example:
#
# $ nix-build '<nixpkgs>' -A dockerTools.examples.redis
# $ docker load < result
{ pkgs, buildImage, pullImage, shadowSetup }:
rec {
# 1. basic example
bash = buildImage {
name = "bash";
contents = pkgs.bashInteractive;
};
# 2. service example, layered on another image
redis = 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 = pkgs.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 ${nginxWebRoot};
}
}
}
'';
nginxWebRoot = pkgs.writeTextDir "index.html" ''
<html><body><h1>Hello from NGINX</h1></body></html>
'';
in
buildImage {
name = "nginx-container";
contents = pkgs.nginx;
runAsRoot = ''
#!${pkgs.stdenv.shell}
${shadowSetup}
groupadd --system nginx
useradd --system --gid nginx nginx
'';
config = {
Cmd = [ "nginx" "-c" nginxConf ];
ExposedPorts = {
"${nginxPort}/tcp" = {};
};
};
};
# 4. example of pulling an image. could be used as a base for other images
debian = 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 = buildImage {
name = "editors";
contents = [
pkgs.coreutils
pkgs.bash
pkgs.emacs
pkgs.vim
pkgs.nano
];
};
}