Run docker-compose build in .gitlab-ci.yml

Question

I have a .gitlab-ci.yml file which contains following:

image: docker:latest

services:
  - docker:dind
         


        

Answer 1

If you don't want to provide a custom docker image with docker-compose preinstalled, you can get it working by installing Python during build time. With Python installed you can finally install docker-compose ready for spinning up your containers.

image: docker:latest

services:
- docker:dind

before_script:
- apk add --update python py-pip python-dev && pip install docker-compose # install docker-compose
- docker version
- docker-compose version

test:
  cache:
    paths:
    - vendor/
  script:
  - docker-compose up -d
  - docker-compose exec -T php-fpm composer install --prefer-dist
  - docker-compose exec -T php-fpm vendor/bin/phpunit --coverage-text --colors=never --whitelist src/ tests/

Use docker-compose exec with -T if you receive this or a similar error:

$ docker-compose exec php-fpm composer install --prefer-dist
Traceback (most recent call last):
  File "/usr/bin/docker-compose", line 9, in 
    load_entry_point('docker-compose==1.8.1', 'console_scripts', 'docker-compose')()
  File "/usr/lib/python2.7/site-packages/compose/cli/main.py", line 62, in main
    command()
  File "/usr/lib/python2.7/site-packages/compose/cli/main.py", line 114, in perform_command
    handler(command, command_options)
  File "/usr/lib/python2.7/site-packages/compose/cli/main.py", line 442, in exec_command
    pty.start()
  File "/usr/lib/python2.7/site-packages/dockerpty/pty.py", line 338, in start
    io.set_blocking(pump, flag)
  File "/usr/lib/python2.7/site-packages/dockerpty/io.py", line 32, in set_blocking
    old_flag = fcntl.fcntl(fd, fcntl.F_GETFL)
ValueError: file descriptor cannot be a negative integer (-1)
ERROR: Build failed: exit code 1