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

docker/Dockerfile

@@ -23,16 +23,10 @@ COPY docker/nginx.conf /etc/nginx/nginx.conf
 # Copy built frontend to nginx's web directory
 COPY ./dist /usr/share/nginx/html
 
-# Set up backend directory and entrypoint script
-COPY ./src/backend /src/backend
-COPY ./src/backend/entrypoint.sh /src/backend/entrypoint.sh
-
-# Make entrypoint script executable
-RUN chmod +x /src/backend/entrypoint.sh
-
 # Expose necessary ports
 EXPOSE 8080
 EXPOSE 8081
 
 # Use entrypoint.sh to run both the backend and nginx
-ENTRYPOINT ["/src/backend/entrypoint.sh"]
+RUN chmod +x /app/src/backend/entrypoint.sh
+ENTRYPOINT ["/app/src/backend/entrypoint.sh"]

docker/nginx.conf

@@ -27,6 +27,11 @@ http {
             proxy_set_header Connection 'upgrade';
             proxy_set_header Host $host;
             proxy_cache_bypass $http_upgrade;
+
+            # CORS headers
+            add_header 'Access-Control-Allow-Origin' '*';  # Allow all origins (can be restricted to a specific domain)
+            add_header 'Access-Control-Allow-Methods' 'GET, POST';  # Allow GET and POST methods
+            add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept';  # Standard headers for requests
         }
 
         # Error pages

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"],
     },
 });