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docker is a powerful platform for developing, shipping, and running applications in containers. containers provide a lightweight and consistent environment, making it easier to manage dependencies and deploy applications across different environments. in this tutorial, we'll walk through the process of running a python application inside a docker container.
before we begin, make sure you have docker installed on your machine. you can download docker from the official website: docker downloads.
let's start by creating a simple python application. create a new directory for your project and create a file named app.py with the following content:
now, create a dockerfile in the same directory as your python application. the dockerfile contains instructions for building a docker image for your application. here's a basic example:
open a terminal, navigate to your project directory, and run the following command to build the docker image:
this command tells docker to build an image using the instructions in the dockerfile and tag it with the name my-python-app.
once the image is built, you can run a container from it using the following command:
this command maps port 4000 on your host machine to port 80 inside the docker container.
visit http://localhost:4000 in your web browser, and you should see the "hello, docker!" message printed by your python application running inside the docker container.
congratulations! you've successfully run a python application in a docker container. this approach makes it easy to distribute and deploy python applications with all their dependencies encapsulated in a container.
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