GitLab CI multistage

.gitlab-ci.yml

.build-and-push-multistage:
  stage: build-and-push
  image: docker:20.10.7-dind
  variables:
    # space separated
    services: app-build app-prod
    # pull / push in this number of parallel jobs
    parallelism: 2
  before_script:
    - apk add --no-cache docker-compose
    - echo "$REGISTRY_PASSWORD" | docker login $REGISTRY --username $REGISTRY_USERNAME --password-stdin
  script:
    - >
      for service in $services; do
        echo "build and push $service";
      done
    - >
      for service in $services;
      do
        docker-compose pull "$service" || true;
      done
    - docker image ls -a
    - >
      for service in $services;
      do
        docker-compose build "$service";
      done
    - >
      for service in $services;
      do
        docker-compose push "$service";
      done
  interruptible: true


app-dev:build-and-push:
  extends: .build-and-push-multistage
  only:
    - develop
  variables:
    IMAGE_TAG: dev