text: from flask import Flask, render_template
  import os
  import random
  
  app = Flask(__name__)
  
  # list of cat images
  images = [
      "https://cdn.dribbble.com/users/868082/screenshots/3985867/azure.gif",
  
  ]
  
  
  @app.route("/")
  def index():
      url = random.choice(images)
      return render_template("index.html", url=url)
  
  
  if __name__ == "__main__":
      app.run(host="0.0.0.0", port=int(os.environ.get("PORT", 5000)))
  