Gitea 1.24+ (re)generates and SAVES the [oauth2] JWT secret to /etc/gitea/app.ini at
LoadCommonSettings. With app.ini mounted directly as a read-only swarm config this fails fatally
(open /etc/gitea/app.ini: read-only file system) on a warm reattach/redeploy, crash-looping the
container before any DB migration. Mount the rendered config at /etc/gitea/app.ini.init (read-only)
and seed it once into the writable config volume via docker-setup.sh, so Gitea owns a writable
/etc/gitea/app.ini. Bumps DOCKER_SETUP_SH_VERSION so the new entrypoint actually deploys.