Add Docker support for FoodsharingSiegen project

Introduced Docker setup, including `docker-compose.yml`, `dockerfile.server`, and related Python helper scripts (`image-create.py`, `image-push.py`, `publish-project.py`, `publish-aio.py`) for building, managing, and deploying Docker images. Updated `.gitignore` to exclude published files, and renamed a field label in the Blazor component for better clarity.

Docker/docker-compose.yml

@@ -0,0 +1,10 @@
+services:
+  server:
+    container_name: fs-onboarding
+    hostname: fs-onboarding
+    image: ghcr.io/troogs/fs-onboarding/server:latest
+    ports:
+      - "8100:56000"
+    volumes:
+      - /docker/data/fs-onboarding/config:/app/config/
+      - /docker/data/fs-onboarding/data:/app/data/