Docker-webapp-Python-Application

1. Create a docker image

$ docker run ubuntu
$ docker run -it ubuntu bash

Copy your container ID :

$ docker run -d ubuntu sleep 2000
$ docker ps

Copy your IP for later use :

$ docker inspect <ContainerID>

2. Setting Up Python 3 in the container

Ubuntu 20.04 and other versions of Debian Linux ship with Python 3 pre-installed. To make sure that our versions are up-to-date, let’s update and upgrade the system with the apt command :

# apt update
# apt -y upgrade

Once the process is complete, we can check the version of Python 3 that is installed in the system by typing:

# python3 -V 

To manage software packages for Python, let’s install pip.

# apt install -y python3-pip

Here I will use flask , so to install it run the below command.

# pip3 install flask

Install all the dependencies required.

# apt-get install -y python3 python-setuptools python-dev build-essential python3-pip python3-mysqldb

• copy source code from app.py
• cat > /opt/app.py
• paste the code and exit

3. Start Web Server

Change the directory to /opt then run the following command.

# FLASK_APP=app.py flask run --host=0.0.0.0

4. Run the Application

Open the browser and go to the url.

http://<IP>:5000                            => Welcome
http://<IP>:5000/how%20are%20you            => I am good, how about you?