nginx.conf

# nginx configuration for ScienceStudio file server
# Serves documents to OnlyOffice Document Server

server {
    listen 80;
    server_name localhost;

    # Enable CORS for OnlyOffice
    add_header 'Access-Control-Allow-Origin' '*' always;
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE' always;
    add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;

    # Serve documents
    location / {
        root /usr/share/nginx/html;
        autoindex on;

        # Handle preflight requests
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' '*';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE';
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';
            add_header 'Access-Control-Max-Age' 1728000;
            add_header 'Content-Type' 'text/plain; charset=utf-8';
            add_header 'Content-Length' 0;
            return 204;
        }
    }

    # Callback endpoint for OnlyOffice save operations
    location /callback {
        client_max_body_size 100M;
        proxy_pass http://host.docker.internal:3000/onlyoffice/callback;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }
}