Add convenience functions, update Docker setup, and integrate Webpack for building WebRTC internals exporter (#3)

Reviewed-on: #3
Co-authored-by: Mirko Milovanovic <mir_ko@me.com>
Co-committed-by: Mirko Milovanovic <mir_ko@me.com>

webrtc-internals-exporter/webpack/webpack.config.js

@@ -0,0 +1,34 @@
+const path = require('path');
+const { EnvironmentPlugin } = require('webpack');
+const envPath = path.resolve(__dirname, '../../.env');
+const envConfig = require('dotenv').config({ path: envPath }).parsed;
+
+module.exports = (env) => {
+  const url = env.URL || 'http://localhost';
+
+  return {
+    entry: '../background.js',
+    target: 'web',
+    mode: 'production',
+    module: {
+      rules: [
+        {
+          test: /\.js?$/,
+          use: 'babel-loader',
+          exclude: /node_modules/,
+        },
+      ],
+    },
+    resolve: { extensions: ['.tsx', '.ts', '.js'] },
+    output: {
+      filename: 'background.bundle.js',
+      path: path.resolve(__dirname, '../'),
+      publicPath: '',
+    },
+    plugins: [
+      new EnvironmentPlugin({
+        WEBRTC_INTERNALS_EXPORTER_URL: envConfig.WEBRTC_INTERNALS_EXPORTER_URL || url
+      }),
+    ],
+  };
+};