version: 2
jobs:
  amd64:
    machine:
      enabled: true
    steps:
      - checkout  
      - run:
          command: |
            if [[ ! $CIRCLE_BRANCH ]]
            then
              DOCKER_TAG=release-$CIRCLE_TAG
            else
              DOCKER_TAG=latest
            fi
            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
            sudo docker build --pull -t $DOCKERHUB_REPO:$DOCKER_TAG-amd64 -f docker/Dockerfile .
            sudo docker push $DOCKERHUB_REPO:$DOCKER_TAG-amd64
  armhf:
    machine:
      enabled: true
    steps:
      - checkout  
      - run:
          command: |
            if [[ ! $CIRCLE_BRANCH ]]
            then
              DOCKER_TAG=release-$CIRCLE_TAG
            else
              DOCKER_TAG=latest
            fi
            sudo docker run --rm --privileged multiarch/qemu-user-static:register --reset
            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
            sudo docker build --pull -t $DOCKERHUB_REPO:$DOCKER_TAG-armhf -f docker/Dockerfile.armhf .
            sudo docker push $DOCKERHUB_REPO:$DOCKER_TAG-armhf
  arm64v8:
    machine:
      enabled: true
    steps:
      - checkout  
      - run:
          command: |
            if [[ ! $CIRCLE_BRANCH ]]
            then
              DOCKER_TAG=release-$CIRCLE_TAG
            else
              DOCKER_TAG=latest
            fi
            sudo docker run --rm --privileged multiarch/qemu-user-static:register --reset
            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
            sudo docker build --pull -t $DOCKERHUB_REPO:$DOCKER_TAG-arm64v8 -f docker/Dockerfile.arm64v8 .
            sudo docker push $DOCKERHUB_REPO:$DOCKER_TAG-arm64v8
  multiarch:
    machine:
      enabled: true
      image: circleci/classic:201808-01
    steps:
      - run:
          command: |
            if [[ ! $CIRCLE_BRANCH ]]
            then
              DOCKER_TAG=release-$CIRCLE_TAG
            else
              DOCKER_TAG=latest
            fi
            # Turn on Experimental features
            sudo mkdir $HOME/.docker
            sudo sh -c 'echo "{ \"experimental\": \"enabled\" }" >> $HOME/.docker/config.json'
            #
            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
            #
            sudo docker manifest create --amend $DOCKERHUB_REPO:$DOCKER_TAG $DOCKERHUB_REPO:$DOCKER_TAG-amd64 $DOCKERHUB_REPO:$DOCKER_TAG-armhf $DOCKERHUB_REPO:$DOCKER_TAG-arm64v8
            sudo docker manifest annotate $DOCKERHUB_REPO:$DOCKER_TAG $DOCKERHUB_REPO:$DOCKER_TAG-amd64 --os linux --arch amd64
            sudo docker manifest annotate $DOCKERHUB_REPO:$DOCKER_TAG $DOCKERHUB_REPO:$DOCKER_TAG-armhf --os linux --arch arm --variant v7
            sudo docker manifest annotate $DOCKERHUB_REPO:$DOCKER_TAG $DOCKERHUB_REPO:$DOCKER_TAG-arm64v8 --os linux --arch arm64 --variant v8
            sudo docker manifest push $DOCKERHUB_REPO:$DOCKER_TAG -p
workflows:
  version: 2
  publish:
    jobs:
      - amd64:
          filters:
            branches:
              only: master
            tags:
              only: /^\d+\.\d+\.\d+$/
      - armhf:
          filters:
            branches:
              only: master
            tags:
              only: /^\d+\.\d+\.\d+$/
      - arm64v8:
          filters:
            branches:
              only: master
            tags:
              only: /^\d+\.\d+\.\d+$/
      - multiarch:
          requires:
            - amd64
            - armhf
            - arm64v8
          filters:
            branches:
              only: master
            tags:
              only: /^\d+\.\d+\.\d+$/