LinuxGSM

Root cause: Both Docker Hub (gameservermanagers/gameserver:pmc) and GHCR (ghcr.io/gameservermanagers/gameserver:pmc) LinuxGSM PaperMC images inject a default crontab entry for the linuxgsm user via the entrypoint script, which is recreated on every container restart or image update: */60 * * * * /app/pmcserver update > /dev/null 2>&1.

Temporary workaround:
1. Exec into the running container and switch to the linuxgsm user
2. Run crontab -r to delete the default auto-update entry
3. Optional: Run crontab -e to set your own custom update schedule
Note: This change is not persisted; re-run crontab -r after each container restart or image upgrade.

Permanent fix: Pull request #70 for the docker-linuxgsm repository removes this arbitrary default cron job to match standard non-containerized LinuxGSM behavior (no automatic updates enabled by default). Use an updated image after the PR is merged for permanent resolution.

Valve removed the anonymous package for L4D2 dedicated server (Steam app 222860), so SteamCMD anonymous login fails and ./l4d2server install cannot download the server. Fix: authenticate with a real Steam account. Edit your LinuxGSM config (lgsm/config-lgsm/l4d2server/l4d2server.cfg or common.cfg) and set:

steamuser="your_steam_username"
steampass="your_steam_password"

Then re-run ./l4d2server install and complete Steam Guard if prompted. Alternatively, log in manually once via steamcmd +login your_steam_username to cache credentials before installing.