fix(capture): update compose context to root for framecache dependency

docker-compose.worker.yml

@@ -109,7 +109,9 @@ services:
   # SDI capture service — only start on nodes with Blackmagic DeckLink cards
   # Set BMD_DEVICE_0 in .env.worker to the actual device path, e.g. /dev/blackmagic/dv0
   capture:
-    build: ./services/capture
+    build:
+      context: .
+      dockerfile: services/capture/Dockerfile
     profiles: [capture]
     restart: unless-stopped
     runtime: nvidia