Dockerize the app

.github/workflows/build_images.yml

@@ -0,0 +1,24 @@
+---
+name: 'build images'
+# See https://itnext.io/building-multi-cpu-architecture-docker-images-for-arm-and-x86-3-building-in-github-action-ci-a382feab5af9
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build-docker-images:
+    name: Build Docker Images
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Login to GitHub Package Registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+      - name: Build & Push Docker image
+        run: docker buildx build -t ghcr.io/${{ github.repository_owner }}/myimage:${GITHUB_SHA} -f [path to Dockerfile] --push --platform=linux/arm64,linux/amd64 [path to build context]