Include templating support (#382)

.github/workflows/docker_push.yml

@@ -0,0 +1,21 @@
+name: Docker build & push
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Install dependencies
+        run: pip install jinja2
+      - name: build
+        env:
+          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+        run: |
+          ./build.py --push-tags