Add Dockerfile build action

.forgejo/workflows/deployment.yaml

@@ -0,0 +1,24 @@
+name: deployment
+on:
+  push:
+    branches:
+      - 'main'
+
+jobs:
+  deployment:
+    runs-on: docker
+    container:
+      image: node:bookworm
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build inventory
+        uses: https://codeberg.org/umglurf/kaniko-action@main
+        with:
+          cache: true
+          cache_repo: git.koeln.ccc.de/${{ github.repository }}/cache
+          push: 'true'
+          context: /workspace/snoopy/in-c4/
+          credentials: |
+            git.koeln.ccc.de=snoopy:${{ secrets.REGISTRY_WRITE }}            
+          destinations: |
+            git.koeln.ccc.de/${{ github.repository }}/in-c4:latest