name: Publish Image in Docker Hub

on:
  push:
    branches: [master]

jobs:
  build:
    runs-on: ubuntu-latest
    env:
      DOCKER_ORGANIZATION: ${{secrets.DOCKER_ORGANIZATION}}

    steps:
      - uses: actions/checkout@v2

      - name: Docker Hub Login
        env:
          DOCKER_USER: ${{secrets.DOCKER_USER}}
          DOCKER_PASSWORD: ${{secrets.DOCKER_PASSWORD}}
        run: |
          echo $DOCKER_PASSWORD | docker login -u $DOCKER_USER --password-stdin

      - name: Extract branch name
        shell: bash
        run: echo "branch=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" >> $GITHUB_OUTPUT
        id: extract_branch

      - name: Build the Docker image
        run: docker build -t web-app:latest .

      - name: Docker Hub Prepare
        run: docker image tag web-app $DOCKER_ORGANIZATION/web-app:${{ steps.extract_branch.outputs.branch }}

      - name: Docker Hub Push
        run: docker image push $DOCKER_ORGANIZATION/web-app:${{ steps.extract_branch.outputs.branch }}