first gocd pipeline - it should look like that

---
format_version: 2
common:
  docker-images-stages-alias: &docker-images-stages-alias
    - build-docker-image:
        jobs:
          build:
            resources:
              - docker
            tasks:
              - exec:
                  command: bash
                  arguments:
                    - -c
                    - test -e $DOCKERFILE_NAME
              - exec:
                  command: bash
                  arguments:
                    - -c
                    - docker build --force-rm -f $DOCKERFILE_NAME -t test/env .
              - exec:
                  command: bash
                  arguments:
                    - -c
                    - docker images
              - exec:
                  command: bash
                  arguments: 
                    - -c
                    - docker tag test/env localhost:5000/test-machine
              - exec:
                  command: bash
                  arguments:
                    - -c
                    - docker push localhost:5000/test-machine

pipelines:
  docker-build:
    group: docker-images
    label_template: "${adapter-git}"
    lock_behavior: unlockWhenFinished
    materials:
      adapter-testy:
        git: git@:event-management/automated-tests.git
        branch: master
        shallow_clone: true
        auto_update: false
        destination: automated-tests
      adapter-git:
        git: git@:bormarek/gocd.git
        branch: master
        shallow_clone: true
        auto_update: true
        destination: gocd
    environment_variables:
      DOCKERFILE_NAME: Dockerfile_alpine
    stages: *docker-images-stages-alias