build container image on release

.github/workflows/build-image.yaml

@@ -0,0 +1,26 @@
+name: Build container image for TubeSync
+
+on:
+  release:
+    types: [release]
+
+env:
+  IMAGE_NAME: tubesync
+
+jobs:
+  container:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build the container image
+      run: docker build . --tag $IMAGE_NAME
+    - name: Log into GitHub Container Registry
+      run: echo "${{ secrets.REGISTRY_ACCESS_TOKEN }}" | docker login https://ghcr.io -u ${{ github.actor }} --password-stdin
+    - name: Push image to GitHub Container Registry
+      run: |
+        LATEST_TAG=ghcr.io/meeb/$IMAGE_NAME:latest
+        DATED_TAG=ghcr.io/meeb/$IMAGE_NAME:$(date +%s)
+        docker tag $IMAGE_NAME $LATEST_TAG
+        docker tag $IMAGE_NAME $DATED_TAG
+        docker push $LATEST_TAG
+        docker push $DATED_TAG

.github/workflows/testing.yaml

@@ -1,4 +1,5 @@
 name: Run Django tests for TubeSync
+
 on:
   push:
     branches: