remove unnecessary code

docker/frontend/entrypoint.sh

@@ -5,10 +5,9 @@ APP_DIR=/var/www/app
 FRONTEND_DIR="$APP_DIR/apps/frontend"
 BACKEND_DIR="$APP_DIR/apps/backend"
 PUBLIC_DIR="$BACKEND_DIR/public"
-PHP_HOST="app-php"
 PHP_PORT=9000
 
-/usr/local/bin/wait-for-it.sh "$PHP_HOST:$PHP_PORT" -t 300
+/usr/local/bin/wait-for-it.sh "BACKEND_DIR:$PHP_PORT" -t 300
 
 cd "$FRONTEND_DIR"
 npm ci --prefer-offline --no-audit