Fix docker build

docker/Dockerfile

@@ -19,6 +19,8 @@ RUN apt-get update && apt-get install -y \
     nano \
     vim
 
+RUN apt-get install -y nodejs npm
+
 # Clear cache
 RUN apt-get clean && rm -rf /var/lib/apt/lists/*
 
@@ -51,3 +53,4 @@ WORKDIR /var/www/html
 
 COPY --chown=www-data:www-data . .
 RUN composer install
+RUN npm install

docker/config.local.php

@@ -1,4 +1,4 @@
 <?php
-$config['installed'] = true;
+$config['installed'] = false;
 $config['server_path'] = '/home/www-data/forgottenserver';
 $config['install_ignore_ip_check'] = true;