build: ds-776 move required packages to prod deps (#449)

Relates to JIRA: DISCOVERY-776

Containerfile

@@ -6,7 +6,7 @@ RUN dnf update -y && dnf clean all
 # install dependencies in a separate layer to save dev time
 WORKDIR /app
 COPY package.json package-lock.json .
-RUN npm install
+RUN npm install --omit=dev
 
 COPY . .
 RUN npm run build

config/webpack.prod.js

@@ -1,8 +1,39 @@
+const fs = require('fs');
+const path = require('path');
 const { setBranding } = require('./webpack.common');
 
-module.exports = ({ REACT_APP_UI_BRAND, REACT_APP_UI_BRAND_NAME, REACT_APP_UI_NAME } = {}) => {
+/**
+ * Update a tsconfig file for webpack.
+ * ts-loader ignores the "exclude" webpack configuration option therefore we dynamically update tsconfig.json to hide
+ * test files. After the dynamic update and build we attempt a git clean up from "./scripts/post.sh".
+ * Git clean up can be removed if the build is limited to specific environments other than development.
+ *
+ * @param {object} params
+ * @param {string} params.filePath
+ * @param {object} params.addConfiguration
+ * @param {string} params.encoding
+ */
+const updateTsConfig = ({ filePath, addConfiguration, encoding = 'utf8' } = {}) => {
+  try {
+    // eslint-disable-next-line global-require
+    const currentConfig = require(filePath);
+    const updatedContents = `${JSON.stringify({ ...currentConfig, ...addConfiguration }, null, 2)}\n`;
+    fs.writeFileSync(filePath, updatedContents, { encoding });
+  } catch (e) {
+    console.error('Updating tsconfig.json failed.', e.message);
+  }
+};
+
+module.exports = ({ RELATIVE_DIRNAME, REACT_APP_UI_BRAND, REACT_APP_UI_BRAND_NAME, REACT_APP_UI_NAME } = {}) => {
   setBranding({ isBrand: REACT_APP_UI_BRAND === 'true', brandName: REACT_APP_UI_BRAND_NAME, name: REACT_APP_UI_NAME });
 
+  updateTsConfig({
+    filePath: path.resolve(RELATIVE_DIRNAME, 'tsconfig.json'),
+    addConfiguration: {
+      exclude: ['**/*.test.ts', '**/*.test.tsx']
+    }
+  });
+
   return {
     ignoreWarnings: [
       {