diff --git a/build/start-container.sh b/build/start-container.sh
index ed34020..5b2a357 100644
--- a/build/start-container.sh
+++ b/build/start-container.sh
@@ -6,6 +6,13 @@ set -e
 # init nvm
 \. $NVM_DIR/nvm.sh
 
+
+if [[ "$INSTALL_BEFORE_START" = true ]]; then
+    echo "composer and npm install"
+    composer install
+    npm install
+fi
+
 if [ ! -f /var/www/html/artisan ]; then
     echo "No existing Laravel project found"
     exit