from flask import Flask, render_template, redirect, url_for

app = Flask(__name__)

@app.route('/')
def home():
    return render_template('index.html')

@app.route('/login')
def login():
    return redirect('http://localhost:5002/login')

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=5001)

I am running 2 container applications on same host using azure container group, after successful deployment I am able to access the application using http://public-ip:5001, but when I click on login link it redirect me to http://localhost:5002/login. but the problem is localhost is pointing to my local machine, but I want it to redirect to localhost:5003 on server. so that I am redirected to sidecar container.