nginx.conf.template

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';

    log_format debug '$remote_addr - $remote_user [$time_local] "$request" '
                     '$status $body_bytes_sent "$http_referer" '
                     '"$http_user_agent" "host:$host" "http_host:$http_host"';

    access_log /var/log/nginx/access.log debug;

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    server_names_hash_bucket_size 64;
    client_max_body_size 20M;
    underscores_in_headers on;

    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml text/javascript application/json application/javascript application/xml+rss application/rss+xml font/truetype font/opentype application/vnd.ms-fontobject image/svg+xml;

    upstream landing_backend {
        server landing:${LANDING_PORT};
    }

    # Determine forwarded protocol (from Cloudflare or local)
    map $http_x_forwarded_proto $forwarded_proto {
        default $http_x_forwarded_proto;
        ''      $scheme;
    }

    server {
        listen ${NGINX_PORT} default_server;
        server_name _;

        # Security headers
        add_header X-Frame-Options "DENY" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-XSS-Protection "1; mode=block" always;
        add_header Referrer-Policy "strict-origin-when-cross-origin" always;

        # Static files served directly by nginx (faster than proxying)
        location /static/ {
            alias /app/staticfiles/;
            expires 1y;
            add_header Cache-Control "public, immutable";
            # Allow CORS for fonts and other assets
            add_header Access-Control-Allow-Origin "*";
        }

        # All routes - proxy to landing container
        location / {
            proxy_pass http://landing_backend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            # Preserve X-Forwarded-Proto from Cloudflare, fallback to $scheme
            proxy_set_header X-Forwarded-Proto $forwarded_proto;
            proxy_redirect off;
        }
    }
}