On 23/12/2025 14:29 EET saturos+dove--- via dovecot <dovecot@dovecot.org> wrote:

Hello!

I was attempting to set up health checking as in the Health Checking document [1]. But it seems that the rootless image is missing the sleep command, which prints the error:

dovecot[16633]: Dec 22 22:05:04 health-check: Error: /dovecot/libexec/dovecot/health-check.sh: 31: sed: not found

Reproduction:

$ podman run --rm -it index.docker.io/dovecot/dovecot:latest-dev which sleep /usr/bin/sleep $ podman run --rm -it index.docker.io/dovecot/dovecot:latest-root which sleep /usr/bin/sleep $ podman run --rm -it index.docker.io/dovecot/dovecot:latest which sleep $

Set up healthchecking on 5001. With latest:

$ echo -e "PING\n" | nc -v localhost 5001 Connection to localhost (::1) 5001 port [tcp/*] succeeded! $

With latest-dev:

$ echo -e "PING\n" | nc -v localhost 5001 Connection to localhost (::1) 5001 port [tcp/*] succeeded! PONG and the error log above is generated.

Version:

$ podman run --rm -it index.docker.io/dovecot/dovecot:latest dovecot --version 2.4.2 (0962ed2104)

[1] https://doc.dovecot.org/2.4.2/core/config/health_check.html

The latest image is missing ~all binaries, if you need a particular binary there feel free to extend the -dev image to your liking.

Aki