name: build docker image & push to reg

on:
  pull_request:
    types: [closed]
    branches: [master]
    paths: ["**"]

jobs:
  build-and-push:
    if: github.event.pull_request.merged == true && contains(github.event.pull_request.labels.*.name, 'CI:Build')
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Log in to DockerHub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: prep tags
        id: vars
        run: |
          echo "COMMIT_SHA=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
          echo "IMAGE_NAME=${{ secrets.DOCKERHUB_USERNAME }}/geth-dev" >> $GITHUB_ENV

      - name: build image
        run: |
          docker build -t $IMAGE_NAME:latest -t $IMAGE_NAME:$COMMIT_SHA .

      - name: push image
        run: |
          docker push $IMAGE_NAME:latest
          docker push $IMAGE_NAME:$COMMIT_SHA