[Jbsco]

This image creates user as uid 1001. On a Linux host running Docker Engine, container ids are host ids, so for a host user with other ids, files written by the container on bind mounts belong to 1001. Adamant's activation also re-owns mounted repositories to 1001, and host git then refuses them.

New docker/entrypoint.sh gives user the uid and gid of whoever owns the mounted checkout, then runs the command as user. It first removes any other image account or group with those ids, since Ubuntu's own account has 1000. This needs root, so the compose file starts the container as root, and adamant_env.sh start now runs its first activation with -u user. A healthcheck reports ready once the ids are set, and start waits for it with up --wait.

On Docker Desktop, a checkout reads as root's inside the container, so nothing changes there. GitHub workflows run the image directly, without the compose file, so CI is unaffected.