Update OVIS frontend configuration in ovis-compose.yml

Replaced the APP_DOMAIN variable with ORIGIN for improved clarity in the OVIS frontend service configuration. Additionally, removed the stripprefix middleware from the Traefik router setup to streamline routing and enhance service management.

ccp/modules/ovis-compose.yml

@@ -80,6 +80,8 @@ services:
       interval: 10s
       timeout: 5s
       retries: 5
+    # Internal only - no direct Traefik exposure. GraphQL is accessed via frontend internal proxy.
+
   ovis-frontend:
     image: docker.verbis.dkfz.de/ovis/ovis-frontend:latest
     container_name: bridgehead-ccp-ovis-frontend
@@ -87,7 +89,7 @@ services:
       OVIS_PUBLIC_BASE_PATH: /ccp-ovis
       PUBLIC_LOGIN_ENABLED: "false"
       PUBLIC_OVIS_IMPORT: ccp
-      APP_DOMAIN: ${HOST}
+      ORIGIN: https://${HOST}
     depends_on:
       ovis-backend-apollo:
         condition: service_healthy
@@ -98,6 +100,5 @@ services:
       - "traefik.http.middlewares.ovis-frontend-ccp-slash-redirect.redirectregex.permanent=true"
       - "traefik.http.routers.ovis-frontend-ccp.tls=true"
       - "traefik.http.routers.ovis-frontend-ccp.rule=PathPrefix(`/ccp-ovis`)"
-      - "traefik.http.middlewares.ovis-frontend-ccp-strip.stripprefix.prefixes=/ccp-ovis"
-      - "traefik.http.routers.ovis-frontend-ccp.middlewares=traefik-forward-auth-ovis,ovis-frontend-ccp-slash-redirect,ovis-frontend-ccp-strip"
+      - "traefik.http.routers.ovis-frontend-ccp.middlewares=traefik-forward-auth-ovis,ovis-frontend-ccp-slash-redirect"
       - "traefik.http.services.ovis-frontend-ccp.loadbalancer.server.port=5173"