Docker CAT should not modify source code directory

[begarco]

Describe the bug

A clear and concise description of what the bug is.
Some times it is impossible for CNES Scan to write the sonar-project.properties or for Sonar Scanner to write the .scannerwork.

To reproduce

Steps to reproduce the behavior.
Launch an analysis with random access write permissions on source code.

Expected behavior

A clear and concise description of what you expected to happen.
Docker CAT should try not to write inside source code directory. Docker CAT would be more user-friendly.

User environment

Please complete the following information.

• OS: Linux
• Image version: 2.0.2