docker-hub-deploy.yml

---
# Publish Docker Image to Docker Hub
name: Docker Hub Deployment
on:
  push:
    branches:
      - main

jobs:
  docker_build:
    runs-on: ubuntu-latest
    env:
      IMAGE_TAG: wwt01/dcauto-study-resources:latest
      GITHUB_BRANCH: refs/heads/main
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Display the repo branch name that triggered the GitHub Action
        if: ${{ github.ref }}
        run: echo ${{ github.ref }}

      - name: Build and push Docker Image
        if: ${{ github.ref == env.GITHUB_BRANCH }}
        id: docker_build
        uses: docker/build-push-action@v3
        with:
          push: true
          tags: ${{ env.IMAGE_TAG }}

      - name: Display Docker Image digest
        run: echo Image digest - ${{ steps.docker_build.outputs.digest }}