Specify scss for imports. Only clean css within src folder

package.json

@@ -9,7 +9,7 @@
   "scripts": {
     "watch": "webpack --watch",
     "watch:dev": "npm run server & npm run watch & npm run sass:watch",
-    "clean:dist": "rimraf dist **/*.css",
+    "clean:dist": "rimraf dist src/**/*.css",
     "clean:ngc": "rimraf **/*.ngfactory.ts **/*.css.shim.ts",
     "sass": "node-sass src -o src --include-path node_modules --output-style compressed -q",
     "sass:watch": "node-sass -w src -o src --include-path node_modules --output-style compressed -q",

src/styles/main.scss

@@ -1,6 +1,6 @@
 @import './variables.scss';
 
-@import '../../node_modules/bootstrap/scss/bootstrap';
+@import '../../node_modules/bootstrap/scss/bootstrap.scss';
 
 @import "../../node_modules/font-awesome/scss/font-awesome.scss";
 

webpack.config.ts

@@ -14,7 +14,7 @@ export var commonPlugins = [
     }
   ),
 
-  // Copy fonts and i18n
+  // Copy fonts, images and i18n to dist/assets
   new CopyWebpackPlugin([
     {
       from: path.join(__dirname, 'node_modules', 'font-awesome', 'fonts'),