docker.yml

name: Docker Hub

on:
  push:
    branches-ignore:
      - master

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Check Out Repo
        uses: actions/checkout@v2

      - name: Set output
        id: vars
        run: echo "::set-output name=branch::${GITHUB_REF#refs/*/}"

      - name: Login to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1

      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          context: ./
          file: ./Dockerfile
          push: true
          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/docker-midpoint:${{ steps.vars.outputs.branch }}

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