Push to Docker Hub with GitHub Actions

.github/workflows/ubuntu.yml

@@ -46,3 +46,35 @@ jobs:
         uses: codecov/codecov-action@v1
         with:
           fail_ci_if_error: false
+
+  publish:
+    # Run only if the previous job succeeds (only master branch or new tags, no pull requests).
+    if: (endsWith(github.ref, '/master') || startsWith(github.ref, 'refs/tags/v')) && contains(github.event_name, 'pull_request') == false
+    needs: test
+    name: Push updated version to Docker Hub
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: claudiugeorgiu
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: claudiugeorgiu/playstore-downloader
+          tags: |
+            type=raw,value=latest
+            type=semver,pattern={{version}}
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}

README.md

@@ -65,7 +65,7 @@ Docker version 20.10.7, build f0df350
 #### Official Docker Hub image
 
 The [official PlaystoreDownloader Docker image](https://hub.docker.com/r/claudiugeorgiu/playstore-downloader)
-is available on Docker Hub:
+is available on Docker Hub (automatically built from this repository):
 
 ```Shell
 $ # Download the Docker image.