CheckMK CEE 1.6.0p20 docker - all host DOWN but they are UP - services working fine

The problem is not the image. The problem is your docker host. You need to setup the container in a way that the container is allowed to do what he want’s.

Inside the container you need root rights to access these sockets. Some container host platforms don’t allow this.

You can check with different capability settings on your host.
The command line switches are like “–set-cap=SYS_ADMIN” in the GUI you should find options like “Execute container using high privilege”.

Does these settings solve the problem?