Add back the github workflows

.github/workflows/docker-image.yml

@@ -0,0 +1,43 @@
+name: Docker Build
+
+on:
+  push:
+    branches:
+      - 'master'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Login to DockerHub
+        uses: docker/login-action@v1 
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: tedkulp/vidgrab:latest
+          cache-from: type=registry,ref=tedkulp/vidgrab:latest
+          cache-to: type=inline
+      -
+        name: git checkout
+        uses: actions/checkout@v2
+      -
+        name: push README to Dockerhub
+        uses: christian-korneck/update-container-description-action@v1
+        env:
+          DOCKER_USER: ${{ secrets.DOCKERHUB_USERNAME }}
+          DOCKER_PASS: ${{ secrets.DOCKERHUB_PASSWORD }}
+        with:
+          destination_container_repo: tedkulp/vidgrab
+          provider: dockerhub
+          short_description: 'Simple web interface to download videos with youtube-dl and store them on your server'
+          readme_file: 'README.md'