node11 + Dockerfile cleanup

Dockerfile

@@ -1,6 +1,10 @@
+##############################################
 # Stage 1: Install node dependencies and run gulp
-FROM node:8 as npm
+##############################################
+
+FROM node:11 as npm
 WORKDIR /app
+
 COPY package.json /app
 COPY package-lock.json /app
 RUN npm install
@@ -9,10 +13,14 @@ COPY resources /app/resources
 COPY gulpfile.js /app
 RUN npm run gulp
 
+##############################################
 # Stage 2: Composer, nginx and fpm
+##############################################
+
 FROM bkuhl/fpm-nginx:7.3
 WORKDIR /var/www/html
 
+# Contains laravel echo server proxy configuration
 COPY /nginx.conf /etc/nginx/conf.d
 
 USER www-data
@@ -32,9 +40,10 @@ ADD --chown=www-data:www-data /database /var/www/html/database
 ADD --chown=www-data:www-data /config /var/www/html/config
 ADD --chown=www-data:www-data /app /var/www/html/app
 
-RUN composer dump-autoload --optimize --no-dev
-RUN touch /var/www/html/database/database.sqlite
-RUN php artisan optimize && php artisan migrate
+RUN composer dump-autoload --optimize --no-dev \
+    && touch /var/www/html/database/database.sqlite \
+    && php artisan optimize \
+    && php artisan migrate
 
 ADD --chown=www-data:www-data /resources /var/www/html/resources
 COPY --chown=www-data:www-data --from=npm /app/public/css /var/www/html/public/css