chore: patch frontend-build deployment

Author: leangseu-edx

package-lock.json

@@ -15,6 +15,7 @@
     "lint": "fedx-scripts eslint --ext .js --ext .jsx .",
     "lint:fix": "fedx-scripts eslint --fix --ext .js --ext .jsx .",
     "prepare": "husky install",
+    "postinstall": "patch-package",
     "snapshot": "fedx-scripts jest --updateSnapshot",
     "start": "fedx-scripts webpack-dev-server --progress",
     "test": "fedx-scripts jest --coverage --passWithNoTests"
@@ -84,6 +85,7 @@
     "jest": "^26.6.3",
     "jest-console-group-reporter": "^1.0.1",
     "jest-when": "^3.6.0",
+    "patch-package": "^8.0.0",
     "postcss-loader": "^8.1.1",
     "rosie": "2.1.1",
     "sass": "^1.72.0",

package.json

@@ -0,0 +1,36 @@
+diff --git a/node_modules/@openedx/frontend-build/config/webpack.prod.config.js b/node_modules/@openedx/frontend-build/config/webpack.prod.config.js
+index 2879dd9..9efd0fc 100644
+--- a/node_modules/@openedx/frontend-build/config/webpack.prod.config.js
++++ b/node_modules/@openedx/frontend-build/config/webpack.prod.config.js
+@@ -12,6 +12,7 @@ const NewRelicSourceMapPlugin = require('@edx/new-relic-source-map-webpack-plugi
+ const HtmlWebpackPlugin = require('html-webpack-plugin');
+ const MiniCssExtractPlugin = require('mini-css-extract-plugin');
+ const path = require('path');
++const fs = require('fs');
+ const PostCssAutoprefixerPlugin = require('autoprefixer');
+ const PostCssRTLCSS = require('postcss-rtlcss');
+ const PostCssCustomMediaCSS = require('postcss-custom-media');
+@@ -23,6 +24,23 @@ const HtmlWebpackNewRelicPlugin = require('../lib/plugins/html-webpack-new-relic
+ const commonConfig = require('./webpack.common.config');
+ const presets = require('../lib/presets');
+ 
++/**
++ * This condition confirms whether the configuration for the MFE has switched to a JS-based configuration
++ * as previously implemented in frontend-build and frontend-platform. If the environment variable JS_CONFIG_FILEPATH
++ * exists, then an env.config.js(x) file will be copied from the location referenced by the environment variable to the
++ * root directory. Its env variables can be accessed with getConfig().
++ *
++ * https://github.com/openedx/frontend-build/blob/master/docs/0002-js-environment-config.md
++ * https://github.com/openedx/frontend-platform/blob/master/docs/decisions/0007-javascript-file-configuration.rst
++ */
++
++const envConfigPath = process.env.JS_CONFIG_FILEPATH;
++
++if (envConfigPath) {
++  const envConfigFilename = envConfigPath.slice(envConfigPath.indexOf('env.config'));
++  fs.copyFileSync(envConfigPath, envConfigFilename);
++}
++
+ // Add process env vars. Currently used only for setting the PUBLIC_PATH.
+ dotenv.config({
+   path: path.resolve(process.cwd(), '.env'),