services:
  docker:
    image: docker:dind
    privileged: true

pipeline:
  build:
    image: docker
    environment:
      - DOCKER_HOST=tcp://docker:2375
    commands:
      - docker build -t devbuild .

  test:
    image: docker
    environment:
      - DOCKER_HOST=tcp://docker:2375
    commands:
      - docker run --rm devbuild /bin/sh -xec 'true'
      - docker run --rm devbuild /bin/sh -xec 'test -f /lib/libc-*.so'
      - docker run --rm devbuild /bin/sh -xec 'nslookup google.com'
      - test "$(docker run --rm devbuild /bin/sh -xec 'date +%Z')" = 'UTC'
      - test "$(docker run --rm devbuild /bin/sh -xec 'echo This is a test string | md5sum | cut -f1 -d\ ' | tee /dev/stderr)" = 'b584c39f97dfe71ebceea3fdb860ed6c'

  publish:
    image: docker
    secrets: [ DOCKER_USER, DOCKER_PASS ]
    environment:
      - DOCKER_HOST=tcp://docker:2375
    commands:
      - apk add --no-cache openssl
      - docker tag devbuild adamant/busybox:latest
      - docker tag devbuild adamant/busybox:1
      - docker tag devbuild adamant/busybox:1.0
      - docker login -u $DOCKER_USER -p $DOCKER_PASS
      - docker push adamant/busybox:latest
      - docker push adamant/busybox:1
      - docker push adamant/busybox:1.0