Using Docker in Build

4th OpenContainer Korea Casual Talk

March 26, 2016

by @subicura

Secure (private repo)
Easy to use
Many plugins
Support linux, osx, windows

PROS

Hard to setting build environment
- ruby 1.9, 2.0, 2.1, ...
- php5, php7?
No isolated build environment
Hard to config
No config versioning

CONS

JENKINS + DOCKER

Checklist

easy to make build environment
build in isolated environment
easy to config
support config versioning

Using Docker in Build

GOLANG_VERSION=1.6
PACKAGE_NAME=github.com/subicura/wuzu

docker run --rm \
    -v $pwd:/go/src/$PACKAGE_NAME \
    -w /go/src/$PACKAGE_NAME \
    golang:${GOLANG_VERSION}-alpine \
    go build

Source File

Build & Test

Checklist

~~easy to setting build environment~~
~~build in isolated environment~~
easy to config
support config versioning

.travis.yml

language: ruby
rvm:
  - 2.1.3
env:
  - DB=mysql
script:
  - RAILS_ENV=test bundle exec rake --trace db:migrate test
before_script:
  - mysql -e 'create database myapp_test'

simple YAML file to describe build & test

wuzu

very simple command-line tool that builds in an isolated (docker) environment.

written in GO
use YAML file
- .wuzu.yml
build with docker
test with docker

# golang build

build:
  from: 'golang:1.6'
  src: $PWD
  dest: /go/src/github.com/subicura/wuzu
  run: go build -v

.wuzu.yml

$ wuzu build

docker run --rm \
  -v SRC:DEST \
  -w DEST \
  FROM \
  CMD

docker run --rm \
  -v $PWD:/go/src/github.com/subicura/wuzu \
  -w /go/src/github.com/subicura/wuzu \
  golang:1.6 \
  go build -v

Checklist

~~easy to setting build environment~~
~~build in isolated environment~~
~~easy to config~~
~~support config versioning~~

Conclusion

docker is good
Let me know if you know any other command-line tool that build with docker
Or fork https://github.com/subicura/wuzu
- before/after script
- test script
- docker image push
- language detection
- ...