DEBUG TOOLBAR - fix INTERNAL_IPS discovery for docker #2528
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A simple fix for the INTERNAL_IPS when using DOCKER
Rationale
For users with multiple containers, the DEBUG TOOL BAR stops showing up if the django container receives an IP higher than 9, ex 172.19.0.10, it becomes 172.19.0.11, not complying with the INTERNAL_IPS requirement.
The actual code doesn't consider this scenario. This fix will work for all scenarios.
Use case(s) / visualization(s)
Users that has a stack with numerous containers