Issue with file permissions

[Allviinn]

Hi all,
I'm a beginner in Docker, and I know that file permissions and user system comes back often.
I now do have the issue.
In my PHP container, I'm able to run composer commands etc.
But when I want to edit a file from my IDE (so from my host non root user) I do not have access to write. Files are readonly

I'm currently using Ubuntu.

Does anyone would know how to help please ?