Add healthchecks and test image before push

frontend/scripts/healthcheck.js

@@ -0,0 +1,26 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
+/* eslint-disable no-console */
+/* eslint-disable no-undef */
+const http = require('http');
+const options = {
+  host: 'localhost',
+  port: 3000,
+  timeout: 2000,
+  path: '/'
+};
+
+const healthCheck = http.request(options, (res) => {
+  console.log(`HEALTHCHECK STATUS: ${res.statusCode}`);
+  if (res.statusCode == 200) {
+    process.exit(0);
+  } else {
+    process.exit(1);
+  }
+});
+
+healthCheck.on('error', function (err) {
+  console.error(err);
+  process.exit(1);
+});
+
+healthCheck.end();