Add GitHub workflow for Docker Hub

.github/workflows/docker.yml

@@ -0,0 +1,36 @@
+name: Publish Docker image
+
+on:
+  push:
+    branches:
+      - 'main'
+      - 'dev'
+
+jobs:
+  push_to_registry:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - context: ./webapp
+            image: anssi/shovel-webapp
+          - context: ./suricata
+            image: anssi/shovel-suricata
+    steps:
+      - uses: actions/checkout@v4
+      - uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ matrix.image }}
+      - name: Build and push Docker image
+        uses: docker/build-push-action@3b5e8027fcad23fda98b2e3ac259d8d67585f671
+        with:
+          context: ${{ matrix.context }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}