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

map $http_x_forwarded_port $nc_port {
  default "$http_x_forwarded_port";
  ''      "$server_port";
}

map $http_x_forwarded_proto $nc_proto {
  default "$http_x_forwarded_proto";
  ''      "$scheme";
}

server {
        listen 8888;
        root /nextcloud;

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

        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;
        add_header X-XSS-Protection "0" always;

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

        location ^~ /.well-known {
            location = /.well-known/carddav   { return 301 $nc_proto://$host/remote.php/dav/; }
            location = /.well-known/caldav    { return 301 $nc_proto://$host/remote.php/dav/; }
            location ^~ /.well-known          { return 301 $nc_proto://$host/index.php$uri;  }
            try_files $uri $uri/ =404;
        }

        location / {
            rewrite ^ /index.php$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\/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|png|jpg|ico|wasm|tflite|map|ogg|flac)$ {
            try_files $uri /index.php$uri$is_args$args;
            expires 6M;
            access_log off;
        }

        location ~ \.woff2?$ {
            try_files $uri /index.php$uri$is_args$args;
            expires 7d;
            access_log off;
        }

        location ~ \.(?:png|html|ttf|ico|jpg|jpeg|bcmap)$ {
            try_files $uri /index.php$uri$is_args$args;
            access_log off;
        }
}