node_server/server.js

const express = require('express');
const http = require('http');

const app = express();
const port = 3000;

app.set('view engine', 'ejs');
app.use(express.static('views'));

app.get('/', (req, res) => {
  res.render('index', {'search_input': '', 'images': {'images': []}});
});

app.get('/query', (req, res) => {
  let search_input = req.query.search_input;
  http
  .get(`http://pclis:5000/images?search_input=` + search_input, resp => {
    let data = "";

    // A chunk of data has been received.
    resp.on("data", chunk => {
      data += chunk;
    });

    // The whole response has been received. Print out the result.
    resp.on("end", () => {
      images_json = JSON.parse(data);
      res.render('index', {'search_input': search_input, 
                           'images': images_json});
    });
  })
  .on("error", err => {
    console.log("Error: " + err.message);
  });
});

app.listen(port, () => {
  console.log(`Server running at http://localhost:${port}`);
});