.travis.yml

sudo: required
language: bash
services:
  - docker
env:
  global:
    - IMAGE_NAME=pperzyna/pact-example

addons:
  apt:
    packages:
      - docker-ce

before_script:
  - docker pull "${IMAGE_NAME}:provider" || true
  - docker pull "${IMAGE_NAME}:consumer" || true  

script:
  - docker build --cache-from "${IMAGE_NAME}" --tag "${IMAGE_NAME}:consumer-${TRAVIS_COMMIT}" -f consumer/Dockerfile consumer/src/
  - docker build --cache-from "${IMAGE_NAME}" --tag "${IMAGE_NAME}:provider-${TRAVIS_COMMIT}" -f provider/Dockerfile provider/src/

before_deploy:
  - echo "$REGISTRY_PASS" | docker login --username "$REGISTRY_USER" --password-stdin || true

deploy:  
  - provider: script
    skip_cleanup: true
    script: docker tag "${IMAGE_NAME}:consumer-${TRAVIS_COMMIT}" "${IMAGE_NAME}:consumer" && docker push "${IMAGE_NAME}:consumer"; docker tag "${IMAGE_NAME}:provider-${TRAVIS_COMMIT}" "${IMAGE_NAME}:provider" && docker push "${IMAGE_NAME}:provider" 
    on:
      branch: master
  - provider: script
    skip_cleanup: true
    script: docker tag "${IMAGE_NAME}:consumer-${TRAVIS_COMMIT}" "${IMAGE_NAME}:consumer-${TRAVIS_TAG}" && docker push "${IMAGE_NAME}:consumer-${TRAVIS_TAG}"; docker tag "${IMAGE_NAME}:provider-${TRAVIS_COMMIT}" "${IMAGE_NAME}:provider-${TRAVIS_TAG}" && docker push "${IMAGE_NAME}:provider-${TRAVIS_TAG}" 
    on:
      tags: true