upstream frontend { server dev_frontend:5174; } upstream backend { server dev_backend:3001; } server { listen 8080; location /api { rewrite /backend/(.*) /$1 break; proxy_pass http://backend; } location /socket.io { rewrite /backend/(.*) /$1 break; proxy_pass http://backend; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "Upgrade"; proxy_set_header Host $host; proxy_hide_header 'Access-Control-Allow-Origin'; } location / { proxy_pass http://frontend; } }