[GitHub][PR Decoration] Private Sonarqube server static images unavailable

[Brialius]

Describe the bug
Github uses https://camo.githubusercontent.com/ to proxy any user images on their side and this cannot be disabled. It means every image should be available for GitHub proxy server, which is impossible with the way of serving static images #80 for private hosted Sonarqube server behind a strict firewall.

To Reproduce
Steps to reproduce the behavior:

1. Setup CE Branch plugin on a private Sonarqube server
2. Use GitHub as a provider
3. Run Sonarqube branch check
4. See error

Expected behavior
Static images are available in GitHub PR checks for private and public accessible Sonarqube servers

Screenshots
If applicable, add screenshots to help explain your problem.

Software Versions

• SonarQube Version: Version 7.9.2 (build 30863)
• Plugin Version: 1.3.0

Additional context
Please return back function of com.github.mc1arke.sonarqube.plugin.branch.image-url-base and make it optional or provide other way to solve this issue.

[don-vip]

I guess a partial revert of #81 is needed to reintroduce the property I removed?

[choi-inkyun]

I have the same problem. The problem arises because the my sonarqube server is 'http' and github is 'https'.

[Brialius]

I guess a partial revert of #81 is needed to reintroduce the property I removed?

Yeah, looks like that..