Fix build step

docker/prod-ssu/Dockerfile

@@ -1,6 +1,13 @@
-FROM node:19 as static-assets
+FROM serversideup/php:8.2-fpm-nginx as get-php-deps
 WORKDIR /app
 COPY . .
+RUN composer install --no-dev --no-interaction --no-plugins --no-scripts --prefer-dist
+
+FROM node:19 as static-assets
+WORKDIR /app
+COPY --from=get-php-deps /app .
+RUN npm install
+RUN npm run build
 
 FROM serversideup/php:8.2-fpm-nginx
 WORKDIR /var/www/html
@@ -14,15 +21,12 @@ RUN composer install --no-dev --no-interaction --no-plugins --no-scripts --prefe
 COPY --chown=9999:9999 . .
 RUN composer dump-autoload
 
-#COPY --from=static-assets --chown=9999:9999 /app/public/build ./public/build
+COPY --from=static-assets --chown=9999:9999 /app/public/build ./public/build
 COPY --chmod=755 docker/prod-ssu/etc/s6-overlay/ /etc/s6-overlay/
 
 RUN php artisan route:cache
 RUN php artisan view:cache
 
-WORKDIR /app
-RUN npm install
-RUN npm run build
 
 RUN echo "alias ll='ls -al'" >>/etc/bash.bashrc
 RUN echo "alias a='php artisan'" >>/etc/bash.bashrc