nginx.conf

# Upstream server pool
upstream app {
    # Gunicorn is listening on this Unix socket
    server unix:/app/app.sock;
}

# Server configuration
server {
    # Listen on port 80 (HTTP)
    listen 80 default_server;
    server_name localhost;  # Adjust if you have a specific server name

    # Security headers
    server_tokens off;  # Don't show the Nginx version number
    add_header X-Frame-Options "SAMEORIGIN";  # Protect against clickjacking
    add_header X-Content-Type-Options "nosniff";  # Prevent MIME-sniffing
    add_header X-XSS-Protection "1; mode=block";  # XSS filter protection
    add_header Content-Security-Policy "default-src 'self'";  # Content security policy

    # Charset setting
    charset utf-8;

    # Location block for routing requests
    location / {
        proxy_pass http://app;  # Forward requests to the Gunicorn upstream
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_read_timeout 1000;  # Adjust timeout as needed
        client_max_body_size 30m;  # Max upload size
    }
}