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creating a python 3 docker image: a step-by-step tutorial
docker is a powerful tool for containerization that allows you to package an application and its dependencies into a single, portable container. in this tutorial, we'll walk through the process of creating a docker image for a python 3 application, along with code examples.
before you begin, make sure you have docker installed on your system. you can download docker from the official website: docker.
for the purpose of this tutorial, let's create a simple python script named app.py:
a dockerfile is a script that contains instructions for building a docker image. create a file named dockerfile (without any file extension) in the same directory as your app.py:
in this dockerfile:
open a terminal in the same directory as your dockerfile and run the following command to build the docker image:
replace mypythonapp with your desired image name.
once the image is built, you can run a container based on that image:
this command maps port 4000 on your local machine to port 80 on the docker container.
visit http://localhost:4000 in your browser, and you should see the "hello, docker!" message.
congratulations! you've successfully created a python 3 docker image. this is a basic example, and you can customize it further based on your application's requirements.
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