nginx.conf

worker_processes 1;
daemon off;
pid /tmp/nginx.pid;
error_log /tmp/error.log;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;
    access_log /tmp/access.log;
    sendfile on;
    keepalive_timeout 65;
    client_max_body_size 100M;

    upstream main_backend {
        server 127.0.0.1:7862;
    }

    upstream preview_backend {
        server 127.0.0.1:7861;
    }

    server {
        listen 7860 default_server;
        server_name _;

        # Serve manifest.json directly
        location = /manifest.json {
            root /app;
            add_header Content-Type "application/manifest+json";
            try_files $uri =404;
        }

        # Handle missing fallback font files gracefully
        location ~ ^/static/fonts/(ui-sans-serif|system-ui)/ {
            access_log off;
            return 204;
        }

        location /preview/ {
            rewrite /preview/(.*) /$1 break;
            proxy_pass http://preview_backend;
            proxy_buffering off;
            proxy_redirect off;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host $http_host;
            proxy_set_header X-Forwarded-Host $http_host;
            proxy_set_header X-Forwarded-Proto $scheme;
        }

        location / {
            proxy_pass http://main_backend;
            proxy_buffering off;
            proxy_redirect off;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host $http_host;
            proxy_set_header X-Forwarded-Host $http_host;
            proxy_set_header X-Forwarded-Proto $scheme;
        }
    }
}