weird: docker version not working in Fedora 41

[francescor]

I've hit a pretty weird Docker behavior: Docker image, which generally works in our setup (Ubuntu), does not work on Fedora 41

$ cat /etc/os-release 
NAME="Fedora Linux"
VERSION="41 (Workstation Edition)"
RELEASE_TYPE=stable
...


$ docker --version 
Docker version 28.5.0, build 887030f

docker image inspect wodby/varnish
[
    {
        "Id": "sha256:d1aa9ce3e058c33f52ea6588413410d73979c5a0f6eadce1aca4d2744df13125",
        "RepoTags": [
            "wodby/varnish:latest"
        ],
        "RepoDigests": [
            "wodby/varnish@sha256:e5784b6b4cb5861f537c3d1c39c347a06ebfe324eb63ffb011b1f9bc340d3235"
        ],
        "Parent": "",
        "Comment": "buildkit.dockerfile.v0",
        "Created": "2025-10-10T02:34:52.142980627Z",
...

$ docker run -d --name my_varnish wodby/varnish


$ docker exec -it my_varnish bash
0e87f3da6ba8:/# ps aux 
PID   USER     TIME  COMMAND
    1 root      0:43 varnishd -j unix,user=varnish -F -a :6081 -T :6082 -f /etc/varnish/default.vc
   92 root      0:00 bash
   98 root      0:00 ps aux

0e87f3da6ba8:/# netstat -tulpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    

###
docker logs my_varnish
Generated Varnish secret: CkdaRj4qb4FTJyUd5alUxBhFbxDt6MkY1RgmxRE9cqmESVMfld0CjSlo96Hb6jrHPXCamkFLRh4qDvPPMiDm64MqIH8dT3hN895CjjQS06xoLeV32CxNSLppyI30YZnY
Varnish purge key is missing. Generating random: b6WWkNbwZ4uyo1WwuWnekok1KOEUyaU6wDgTzoRaPzxGT9Gf1Nzwat0uKiMSuvtF

as you can see it does not start.

Again: not an issue for us, we use Ubuntu, but it's the first time I hit a Docker image which is working in Ubuntu and does not work in Fedora