docs: add detailed MapProxy Docker setup instructions

[JoseSzycho]

PR Description

This pull request adds a comprehensive Docker & Docker Compose setup tutorial to MAPPROXY.md.

Key Additions & Changes:

• Docker Compose Setup: Added a containerized approach using Docker Compose with the official ghcr.io/mapproxy/mapproxy:6.1.1-dev image

• iNav Configurator Instructions:

  • Outlined the steps to select MapProxy as the Map Provider.
  • Documented the exact URL and layer name configuration settings.
  • Added a troubleshooting tip for tab switching (navigating to another tab and back) if changes do not immediately update in the Mission Control tab.

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[github-actions]

Branch Targeting Suggestion

You've targeted the master branch with this PR. Please consider if a version branch might be more appropriate:

• maintenance-9.x - If your change is backward-compatible and won't create compatibility issues between INAV firmware and Configurator 9.x versions. This will allow your PR to be included in the next 9.x release.

• maintenance-10.x - If your change introduces compatibility requirements between firmware and configurator that would break 9.x compatibility. This is for PRs which will be included in INAV 10.x

If master is the correct target for this change because it should never be included in any release, no action is needed.

---

This is an automated suggestion to help route contributions to the appropriate branch.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[b14ckyy]

That's awesome! Thank you! Especially for the Compose setup. I will definitely try that on my OMV Home Server as soon as I have time :)

[JoseSzycho]

@b14ckyy Thank you! You are welcome.

My idea is to start contributing with the project, just small bits during my free time :)

I'll be waiting for the review, so I can learn from the reviewers feedback before I create some other small PRs 🚀

[sensei-hacker]

Thanks!

[JoseSzycho]

Thanks to you and the Inav Team!

[sensei-hacker]

Just an FYI for contributors: The tentative schedule for INAV 10 is to have a full release in mid December. That means RC2 needs to be in early to mid November, which places INAV 10.0RC1 at September 1. Please plan to have any new features for INAV 10.0 ready for RC1 no later than September 1. After that, 10.1 will follow about six to seven months later.