docker-image.yml

name: Docker Image CI

on:
  push:
    branches: [master]
    paths:
      - .devcontainer/base.Dockerfile
      - .devcontainer/Dockerfile
  pull_request:
    branches: [master]
    paths:
      - .devcontainer/base.Dockerfile
      - .devcontainer/Dockerfile
  release:
    types: [published, edited]

jobs:

  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2
    - name: Login to Docker Hub
      uses: docker/login-action@v1
      with:
        username: ${{ secrets.DOCKERHUB_USERNAME }}
        password: ${{ secrets.DOCKERHUB_TOKEN }}
    - name: Set env for PR branch
      id: branch_vars
      if: ${{ startsWith(github.ref, 'refs/pull/') }}
      run: |
        echo "image_tag=dev" >> $GITHUB_ENV
        echo "meteor_release=latest" >> $GITHUB_ENV
    - name: Set env for master branch
      id: master_vars
      if: ${{ github.ref == 'refs/heads/master' }}
      run: |
        echo "image_tag=latest" >> $GITHUB_ENV
        echo "meteor_release=latest" >> $GITHUB_ENV
    - name: Set env for github release
      id: release_vars
      if: ${{ startsWith(github.ref, 'refs/tags/') }}
      run: |
        VERSION=$(echo $GITHUB_REF | sed "s/refs\/tags\/v\(.*\)/\1/")
        echo "image_tag=$VERSION" >> $GITHUB_ENV
        echo "meteor_release=$VERSION" >> $GITHUB_ENV
    - name: Build docker image
      run: docker build .devcontainer --file .devcontainer/base.Dockerfile --build-arg RELEASE="${{ env.meteor_release }}" --tag "meteorengineer/meteor-devcontainer:${{ env.image_tag }}"
    - name: Push docker image
      run: docker push "meteorengineer/meteor-devcontainer:${{ env.image_tag }}"