Скачать или смотреть How to Properly Run Django on a Docker Container

Learn how to effectively run your Django application in a Docker container by making the right configurations. This guide will simplify your setup process and resolve common issues.
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This video is based on the question https://stackoverflow.com/q/57738603/ asked by the user 'Gopi Krishna' ( https://stackoverflow.com/u/2049591/ ) and on the answer https://stackoverflow.com/a/63943919/ provided by the user 'targhs' ( https://stackoverflow.com/u/8799471/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Properly Run Django on a Docker Container

Setting up a Django server inside a Docker container can be a daunting task for many developers. You might find yourself successfully launching the Docker container, only to discover that your Django application isn't responding as expected. If you're facing issues with running Django commands within Docker, you're not alone. Many developers encounter similar hurdles when trying to set up their applications effectively.

In this post, we’ll delve into common problems associated with running Django in Docker and provide a well-structured solution to get you up and running smoothly. Let’s break it down step by step.

Understanding the Problem

You’ve likely created a Dockerfile and a docker-compose.yml file, and perhaps even built your container without any major issues. However, you still can't access your Django application via the browser, and you might find yourself stuck in the Python shell unexpectedly instead of loading the app.

The issue typically arises from how the Django development server is launched and how it listens for incoming connections. By default, Django's development server listens on 127.0.0.1 (localhost), which makes it inaccessible from outside the Docker container. To allow external access, you'll need to configure Django to listen on all available IP addresses.

Solution: Update Your Command

Change the Command for Django's Development Server

To resolve the accessibility issue, you need to modify the runserver command in your Dockerfile or docker-compose.yml file.

Update Your Dockerfile: Modify the CMD line in your Dockerfile as follows:

[[See Video to Reveal this Text or Code Snippet]]

Update Docker-compose: If you're using docker-compose, you should adjust the command in your docker-compose.yml file:

[[See Video to Reveal this Text or Code Snippet]]

Example Configurations

Dockerfile Example

Here’s a complete example of what your Dockerfile should look like:

[[See Video to Reveal this Text or Code Snippet]]

Docker-compose Example

Your docker-compose.yml file should resemble this:

[[See Video to Reveal this Text or Code Snippet]]

Important Points to Remember

Always use 0.0.0.0 in your runserver command to allow connections from outside the Docker container.

Ensure that your ports are correctly mapped, as shown in your Docker Compose file ("8000:8000").

After making changes, remember to rebuild your Docker image using the command:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following these steps, you should successfully run your Django application within a Docker container and access it in your browser via http://127.0.0.1:8000/myapp/login. Docker can significantly streamline your development process when used correctly, and being able to run your Django applications seamlessly is just one of the many benefits it offers. Happy coding!