fix: update mcp-proxy service to build from Dockerfile and correct command syntax

Author: Acuspeedster

docker-compose.yml

@@ -34,10 +34,12 @@ services:
       - qdrant
 
   mcp-proxy:
-    image: ghcr.io/microsoft/mcp-proxy:latest
+    build:
+      context: .
+      dockerfile: Dockerfile
     ports:
       - "3000:3000"
-    command: http://mcp-server:3001/sse --port 3000 --host 0.0.0.0 --allow-origin="*"
+    command: python -m mcp.proxy http://mcp-server:3001/sse --port 3000 --host 0.0.0.0 --allow-origin="*"
     depends_on:
       - mcp-server