build: Build infrastructure images

.github/workflows/build-infra-dockers.yaml

@@ -0,0 +1,41 @@
+name: Build Infrastructure Images
+
+on:
+  push:
+    branches:
+      - infrastructure
+
+jobs:
+
+  docker-syncthing:
+    name: Build and push Docker images
+    runs-on: ubuntu-latest
+    environment: docker
+    strategy:
+        matrix:
+            pkg:
+                - stcrashreceiver
+                - strelaypoolsrv
+                - stupgrades
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile.${{ matrix.pkg }}
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: syncthing/${{ matrix.pkg }}:latest