diff --git a/assets/php-fpm.conf b/assets/php-fpm.conf
index 1116b9d..f46ab48 100644
--- a/assets/php-fpm.conf
+++ b/assets/php-fpm.conf
@@ -7,8 +7,8 @@ listen = /var/run/php/php-fpm.sock
 listen.owner = www-data
 listen.group = www-data
 ;; ignored when FPM is not running as root
-; user = www-data
-; group = www-data
+user = www-data
+group = www-data
 
 pm = dynamic
 pm.max_children = 5
diff --git a/assets/run.sh b/assets/run.sh
index 459d235..f617c17 100755
--- a/assets/run.sh
+++ b/assets/run.sh
@@ -7,15 +7,16 @@ export DUMP_ON_RESTART="${DUMP_ON_RESTART:-false}"
 export INIT_ON_RESTART="${INIT_ON_RESTART:-false}"
 export INIT_SCRIPTS_DIR="${INIT_SCRIPTS_DIR:-/tmp/init-scripts/}"
 export INIT_SCRIPTS_ON_RESTART="${INIT_SCRIPTS_ON_RESTART:-false}"
-export INIT_SCRIPTS_USER="${INIT_SCRIPTS_USER:-www-data}"
+export INIT_SCRIPTS_USER="${INIT_SCRIPTS_USER:-$RUN_AS_USER}"
 export INSTALL_MODULES_ON_RESTART="${INSTALL_MODULES_ON_RESTART:-false}"
 export MYSQL_VERSION="${MYSQL_VERSION:-5.7}"
 export ON_INIT_SCRIPT_FAILURE="${ON_INIT_SCRIPT_FAILURE:-fail}"
 export ON_INSTALL_MODULES_FAILURE="${ON_INSTALL_MODULES_FAILURE:-fail}"
 export POST_SCRIPTS_DIR="${POST_SCRIPTS_DIR:-/tmp/post-scripts/}"
 export POST_SCRIPTS_ON_RESTART="${POST_SCRIPTS_ON_RESTART:-false}"
-export POST_SCRIPTS_USER="${POST_SCRIPTS_USER:-www-data}"
+export POST_SCRIPTS_USER="${POST_SCRIPTS_USER:-$RUN_AS_USER}"
 export PS_PROTOCOL="${PS_PROTOCOL:-http}"
+export RUN_AS_USER="${RUN_AS_USER:-www-data}"
 export SSL_REDIRECT="${SSL_REDIRECT:-false}"
 export XDEBUG_ENABLED="${XDEBUG_ENABLED:-false}"
 
@@ -25,9 +26,9 @@ MODULES_INSTALLED_LOCK=/tmp/flashlight-modules-installed.lock
 INIT_SCRIPTS_LOCK=/tmp/flashlight-init-scripts.lock
 POST_SCRIPTS_LOCK=/tmp/flashlight-post-scripts.lock
 
-# Runs everything as www-data
+# Runs everything as $RUN_AS_USER
 run_user () {
-  sudo -g www-data -u www-data -- "$@"
+  sudo -g "$RUN_AS_USER" -u "$RUN_AS_USER" -- "$@"
 }
 
 if [ ! -f $INIT_LOCK ] || [ "$INIT_ON_RESTART" = "true" ]; then
@@ -41,6 +42,12 @@ if [ ! -f $INIT_LOCK ] || [ "$INIT_ON_RESTART" = "true" ]; then
     http*) echo "PS_DOMAIN is not expected to be an URI"; sleep 3; exit 2 ;;
   esac
 
+# Check if RUN_AS_USER is not www-data
+  if [ "$RUN_AS_USER" != "www-data" ]; then
+    sed -i "s/www-data/$RUN_AS_USER/g" /usr/local/etc/php-fpm.conf
+    sed -i "s/www-data/$RUN_AS_USER/g" /etc/nginx/nginx.conf
+  fi
+
   # Check if a tunnel autodetection mechanism should be involved
   if [ -n "${NGROK_TUNNEL_AUTO_DETECT+x}" ]; then
     echo "* Auto-detecting domain with ngrok client api on ${NGROK_TUNNEL_AUTO_DETECT}..."
@@ -208,7 +215,7 @@ if [ "$DRY_RUN" = "true" ]; then
 fi
 
 echo "* Starting php-fpm..."
-run_user php-fpm -D
+run_user php-fpm -D -R
 
 echo "* Starting nginx..."
 nginx -g "daemon off;" &
diff --git a/examples/xdebug-prestashop/docker-compose.yml b/examples/xdebug-prestashop/docker-compose.yml
index 306448c..c97f426 100644
--- a/examples/xdebug-prestashop/docker-compose.yml
+++ b/examples/xdebug-prestashop/docker-compose.yml
@@ -8,10 +8,10 @@ services:
     environment:
       - PS_DOMAIN=localhost:8000
       - INIT_SCRIPTS_DIR=/tmp/init-scripts
-      - INIT_SCRIPTS_USER=root
+      - RUN_AS_USER=root
       - XDEBUG_ENABLED=true
     volumes:
-      - ./PrestaShop:/var/www/html:rw
+      - ./PrestaShop:/var/www/html:delegated
     ports:
       - 8000:80