old_contents: from flask import Flask
  from flask import render_template
  from flask import request
  from flask import make_response
  from utils import connect_to_redis
  import os
  import socket
  import random
  import json
  
  option_a = os.getenv('OPTION_A', "Waffle.io")
  option_b = os.getenv('OPTION_B', "ZenHub")
  hostname = socket.gethostname()
  
  redis = connect_to_redis("redis")
  app = Flask(__name__)
  
  
  @app.route("/", methods=['POST','GET'])
  def hello():
      voter_id = request.cookies.get('voter_id')
      if not voter_id:
          voter_id = hex(random.getrandbits(64))[2:-1]
  
      vote = None
  
      if request.method == 'POST':
          vote = request.form['vote']
          data = json.dumps({'voter_id': voter_id, 'vote': vote})
          redis.rpush('votes', data)
  
      resp = make_response(render_template(
          'index.html',
          option_a=option_a,
          option_b=option_b,
          hostname=hostname,
          vote=vote,
      ))
      resp.set_cookie('voter_id', voter_id)
      return resp
  
  
  if __name__ == "__main__":
  	app.run(host='0.0.0.0', port=80, debug=True)
  
new_contents: from flask import Flask
  from flask import render_template
  from flask import request
  from flask import make_response
  from utils import connect_to_redis
  import os
  import socket
  import random
  import json
  
  option_a = os.getenv('OPTION_A', "Containers")
  option_b = os.getenv('OPTION_B', "Not Containers")
  hostname = socket.gethostname()
  
  redis = connect_to_redis("redis")
  app = Flask(__name__)
  
  
  @app.route("/", methods=['POST','GET'])
  def hello():
      voter_id = request.cookies.get('voter_id')
      if not voter_id:
          voter_id = hex(random.getrandbits(64))[2:-1]
  
      vote = None
  
      if request.method == 'POST':
          vote = request.form['vote']
          data = json.dumps({'voter_id': voter_id, 'vote': vote})
          redis.rpush('votes', data)
  
      resp = make_response(render_template(
          'index.html',
          option_a=option_a,
          option_b=option_b,
          hostname=hostname,
          vote=vote,
      ))
      resp.set_cookie('voter_id', voter_id)
      return resp
  
  
  if __name__ == "__main__":
  	app.run(host='0.0.0.0', port=80, debug=True)
  
subject: Update app.py