Nice. Thanks for sharing.
Before using a version from master, please make sure you understand the risks. It might be very unstable and even broken sometimes.
I know, so I just changed the image. Now it will be more clear for the user.
Now you can select a git-tag and then cherrypick from master.
If you use this, you don’t have to create the environment for building. In this way you keep it all in a closed container and you don’t have to install anything on your machine.
You can find it here: https://github.com/x821938/traccar-build-from-source
Requires docker-knowledge.