fix(newer-sonar-image): permissions for custom certificates

Presentation

Fixes #26 (closed)

Checklist

• Documented:
  • [-] README.md should not be necessary since the change is transparent to the users
  • [-] kicker.json not sure if there is something to do here
• Tested & examplified:
  • only tested in a self hosted, not publicly available Gitlab instance if necessary I would need to setup an example project