docker-nextcloud/rootfs/etc/nginx/conf.d/default.conf

server {
        listen 8888;
        root /nextcloud;

        # Emit relative redirects (protocol handled by reverse proxy)
        absolute_redirect off;

        fastcgi_buffers 64 4K;
        fastcgi_hide_header X-Powered-By;
        large_client_header_buffers 4 16k;
        client_body_timeout 300s;

        add_header Referrer-Policy "no-referrer" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Permitted-Cross-Domain-Policies "none" always;
        add_header X-Robots-Tag "noindex, nofollow" always;

        location = /robots.txt {
            allow all;
            log_not_found off;
            access_log off;
        }

        location ^~ /.well-known {
            location = /.well-known/carddav { return 301 /remote.php/dav/; }
            location = /.well-known/caldav  { return 301 /remote.php/dav/; }

            return 301 /index.php$request_uri;
        }

        location / {
            rewrite ^ /index.php$request_uri;
        }

        location /remote {
            return 301 /remote.php$request_uri;
        }

        location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)(?:$|/) {
            return 404;
        }

        location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console) {
            return 404;
        }

        location ~ ^\/(?:index|remote|public|cron|core\/ajax\/update|status|ocs\/v[12]|updater\/.+|ocs-provider\/.+|.+\/richdocumentscode(_arm64)?\/proxy)\.php(?:$|\/) {
            include /etc/nginx/fastcgi_params;
            fastcgi_split_path_info ^(.+?\.php)(/.*)$;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_param PATH_INFO $fastcgi_path_info;
            fastcgi_param modHeadersAvailable true;
            fastcgi_param front_controller_active true;
            fastcgi_pass unix:/php/run/php-fpm.sock;
            fastcgi_intercept_errors on;
            fastcgi_request_buffering off;
            fastcgi_read_timeout 1200;
        }

        location ~ ^/(?:updater|ocs-provider)(?:$|/) {
            try_files $uri/ =404;
            index index.php;
        }

        location ~ \.(?:css|js|mjs|svg|gif|ico|jpg|jpeg|png|webp|wasm|tflite|map|ogg|flac|mp4|webm)$ {
            try_files $uri /index.php$request_uri;
            expires 6M;
            access_log off;
        }

        location ~ \.(otf|woff2?)$ {
            try_files $uri /index.php$request_uri;
            expires 7d;
            access_log off;
        }
}