Updated socket connection code to support docker. Also updated dockerfile and entrypoint to support new file structure.

src/backend/entrypoint.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 # Start the backend server
-node /src/backend/server.cjs &
+node /app/src/backend/server.cjs &
 
 # Start nginx in the foreground
 exec nginx -g 'daemon off;'

src/backend/server.cjs

@@ -7,6 +7,7 @@ const io = socketIo(server, {
     cors: {
         origin: "*",
         methods: ["GET", "POST"],
+        transports: ["polling", "websocket"],
     },
 });