Add .devcontainer + minor changes

source/ui/scripts/webpack-dev.js

@@ -1,7 +1,7 @@
 const { merge } = require('webpack-merge');
 
 const common = require('./webpack-common');
-const myEnv = require('dotenv').config({ path: 'config/local/.env.local' }).parsed;
+const myEnv = require('dotenv').config({ path: 'config/app/.env.local' }).parsed;
 
 module.exports = (env, args) => {
 	return merge(common(env, args, myEnv), {

source/ui/scripts/webpack-prod.js

@@ -1,6 +1,6 @@
 const { merge } = require('webpack-merge');
 
-const myEnv = require('dotenv').config({ path: 'config/prod/.env.prod' }).parsed;
+const myEnv = require('dotenv').config({ path: 'config/app/.env.prod' }).parsed;
 const common = require('./webpack-common');
 
 // const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');