name: docker image ci

on:
  push:
    branches:
    - master
    tags:
    - invalid-tag

jobs:
  test:
    runs-on: ubuntu-18.04

    steps:
    - uses: actions/checkout@master

    - name: build
      if: github.event.deleted == false
      env:
        DOCKER_IMAGE: docker.pkg.github.com/${{ github.repository }}/action:latest
      run: |
        docker build . --file Dockerfile --tag ${DOCKER_IMAGE} ||
        (echo -e "\e[31m[${GITHUB_WORKFLOW}] failed to build\e[m" && exit 1)

    - name: push latest image
      if: success() && endsWith(github.ref, 'master')
      env:
        DOCKER_IMAGE: docker.pkg.github.com/${{ github.repository }}/action:latest
        PKG_GITHUB_TOKEN: ${{ secrets.PKG_GITHUB_TOKEN }}
      run: |
        echo ${PKG_GITHUB_TOKEN} | docker login docker.pkg.github.com -u ${GITHUB_ACTOR} --password-stdin &&
        docker push ${DOCKER_IMAGE} &&
        docker logout