enh: CI docker pull with version

.github/workflows/main-versioned-docker-pull.yml

@@ -0,0 +1,36 @@
+name: build and pull latest docker image
+
+on:
+  push:
+    branches:
+      - "main"
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Get the version
+        id: get_version
+        run: echo ::set-output name=VERSION::$(git describe --tags --abbrev=0)
+      - name: Use the version
+        run: echo "The current version is ${{ steps.get_version.outputs.VERSION }}"
+      - name: Write version to webapp
+        run: echo "VITE_APP_VERSION=${{ steps.get_version.outputs.VERSION }}" >> webapp/.env.production
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: "${{ secrets.DOCKERHUB_USERNAME }}/httpymonitor:${{ steps.get_version.outputs.VERSION }}"