Add show_toolbar_with_docker function for Docker IP handling

[blingblin-g]

Description

• Introduced a new function, show_toolbar_with_docker, to determine if the toolbar should be displayed when running inside Docker containers.
• Updated installation documentation to reference the new function for Docker configurations.
• Added a changelog entry for the new functionality.

Fixes #2113

Checklist:

• [ ] I have added the relevant tests for this change.
• [x] I have added an item to the Pending section of docs/changes.rst.

[matthiask]

Hi @blingblin-g I wanted to ask if you still intend to work on this and/or if there's anything I can do to help get this moving?

[matthiask]

Replaced by https://github.com/django-commons/django-debug-toolbar/pull/2153

[blingblin-g]

@matthiask

Oh, Sorry. I just noticed that the PR I was responsible for was closed just now after remaining unfinished for a long time. Could you please let me know if there is anything else that needs to be done regarding this task?

And I will make sure to share updates on my progress more frequently and inform you in advance if there are any delays.

Thank you.

[matthiask]

Hi @blingblin-g

Sure, I'd appreciate a review on the new PR over here: https://github.com/django-commons/django-debug-toolbar/pull/2153

I mostly only applied the suggested changes and submitted it myself again, still with you as the author.

[blingblin-g]

Great! I’d love to review it.