CheckMK docker container runs only for 30 secs after Update base OS

Troubleshooting
,
1

CMK version: 2.3.0p38
OS version: Debian 13

Error message:

We had a working docker container running a checkmk 2.3.0p38 Enterprise Instance.
After updating the base OS to Debian 13 the container restarts every 30 seconds, the CheckMK Instance does not start anymore.

The container log shows for every restart:

{“log”:“### PREPARE POSTFIX (Hostname: 79defca4d142, Relay host: mail.DOMAIN.de)\r\n”,“stream”:“stdout”,“time”:“2025-12-02T10:38:26.09486359Z”}
{“log”:“### STARTING MAIL SERVICES\r\n”,“stream”:“stdout”,“time”:“2025-12-02T10:38:27.506191155Z”}
{“log”:“syslogd: timed out waiting for child\r\n”,“stream”:“stdout”,“time”:“2025-12-02T10:38:57.551494251Z”}

Any idea what we can do?

Thanks

Edit:

/usr/sbin/syslogd -d

(…)
syslogd: restarted
Can’t open /proc/kmsg: Permission denied
syslogd: cannot create /dev/log: Permission denied
(logmsg): syslog.err (43), flags 4, from 79defca4d142, msg syslogd: cannot create /dev/log: Permission denied
Logging to UNUSED
cannot create /dev/log: Success
Can’t open /dev/log: Success

The number is the checkmk container ID