SLD styles can't be edit with non-root user image.

[agpenton]

After building a geoserver image with the custom_build.sh, and running a container with. we face an issue with the SLD style, that can't be created, edited, or modified.

I have tested the same scenario with an image from the docker hub, running under root user the result was different, and everything works fine.

[randomorder]

this is resolved