GR-580 compress responses

app.js

@@ -11,6 +11,7 @@ const logger = require('./utils/logger'); // logging
 const uid = require('uid'); // generates a unique ID for each request
 const helmet = require('helmet');
 const cors = require('cors');
+const compression = require('compression');
 
 const app = express();
 const ignoreFrom = process.env.IGNORE_ADDRESS || ''; // to skip logging of requests from IT's security tests
@@ -34,6 +35,7 @@ const errorHandler = (err, req, res, next) => {
 
 app.use(helmet());
 app.use(cors());
+app.use(compression());
 app.use(bodyParser.json({ type: 'application/json', limit: '50mb' }));
 app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerSpec));
 app.use('/api/v1', express.Router());