diff --git a/gulpfile.js b/gulpfile.js
index 4d0accd05..71be26d3d 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -77,9 +77,17 @@ gulp.task('e2e-run', () => {
 
 gulp.task('clean', () => {
     const del = require('del');
-    return del([`${buildDir}/*`, `!${buildDir}/templates`, `!${buildDir}/images`], {force: true});
+    const files = [
+        `${buildDir}/*`,
+        `!${buildDir}/templates`,
+        `!${buildDir}/images`,
+        `docker-compose.yml`
+    ];
+    return del(files, {force: true});
 });
 
+gulp.task('i', ['install']);
+
 gulp.task('install', () => {
     const install = require('gulp-install');
     let jsonFile = [];
@@ -97,9 +105,6 @@ gulp.task('install', () => {
         }));
 });
 
-// Gulp install alias
-gulp.task('i', ['install']);
-
 // Deployment
 
 gulp.task('build', ['clean'], () => {
@@ -186,9 +191,8 @@ gulp.task('nginx-stop', ['nginx-conf'], async () => {
 gulp.task('nginx-conf', async () => {
     const mustache = require('mustache');
 
-    if (!fs.existsSync(nginxTemp)) {
-        fs.mkdirSync(nginxTemp);
-    }
+    if (!await fs.exists(nginxTemp))
+        await fs.mkdir(nginxTemp);
 
     let params = {
         services: await getServices(),
@@ -215,11 +219,8 @@ gulp.task('nginx-clean', () => {
     return del([`${nginxTemp}/*`], {force: true});
 });
 
-let services;
-
 async function getServices() {
-    if (services) return services;
-
+    let services;
     let startPort = defaultPort + 1;
     services = [];
 
@@ -285,7 +286,7 @@ gulp.task('webpack-dev-server', function() {
 
 // Locale
 
-let localeFiles = `${srcDir}/**/locale/*.json`;
+let localeFiles = `${srcDir}/**/locale/*.yml`;
 
 gulp.task('locales', function() {
     const extend = require('gulp-extend');