Installing Python3 9 and pip in docker image and not python 3 8

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Sure, I can help you with that. In this tutorial, I'll walk you through the process of creating a Docker image with Python 3.9 and pip, instead of Python 3.8, and provide code examples for each step.
Note: Make sure you have Docker installed on your system before proceeding. You can download and install Docker from Docker's official website.
Start by creating a Dockerfile, which is a script that defines how your Docker image should be built. Here's a simple Dockerfile for Python 3.9:
In this Dockerfile:
Now that you have a Dockerfile, navigate to the directory containing it in your terminal and run the following command to build the Docker image:
This command creates a Docker image with the name python3.9-image. The . at the end indicates that the Dockerfile is in the current directory.
After building the image, you can create and run a Docker container using the image. Run the following command to start a container:
Replace 5000 with the port your application is using, and python3.9-image with the name you specified when building the image.
Your Python 3.9-based container is now running your application.
You can verify that Python 3.9 and pip are installed inside the container by running the following commands:
Replace container_id with the actual ID of your running container. This will show the Python 3.9 version and the version of pip installed in the container.
That's it! You've successfully created a Docker image with Python 3.9 and pip, and you can now run your Python application with the desired Python version.
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