[Docker Rootless] dockerd can't find 'config.json'

Hi all,

The rootless mode work fine but i have a this error message in the 'daemon.log' every minute

No config file found, using default or config from environment variables

My "config.json" is in my local user repertory : /home/omdocker/.docker.
It can read the context : docker context ls
I have done a export DOCKER_CONFIG=~/.docker and restart docker, but the error are still here.
Any clue ?
Thx

Docker info :

dockerClient:
 Context:    default
 Debug Mode: false
 Plugins:
  app: Docker App (Docker Inc., v0.9.1-beta3)
  buildx: Docker Buildx (Docker Inc., v0.9.1-docker)

Server:
 Containers: 22
  Running: 20
  Paused: 0
  Stopped: 2
 Images: 22
 Server Version: 20.10.21
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: false
  userxattr: true
 Logging Driver: syslog
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 1c90a442489720eec95342e1789ee8a5e1b9536f
 runc version: v1.1.4-0-g5fd4c4d1
 init version: de40ad0
 Security Options:
  seccomp
   Profile: default
  rootless
  cgroupns
 Kernel Version: 5.19.0-0.deb11.2-amd64
 Operating System: Debian GNU/Linux 11 (bullseye)
 OSType: linux
 Architecture: x86_64
 CPUs: 4
 Total Memory: 7.425GiB
 Name: omv
 ID: POM6:7XYU:7NNC:IXDD:OM4V:J4IY:RG6T:PHC5:6YQJ:6P3D:MALN:QVKB
 Docker Root Dir: /srv/dev-disk-by-uuid-51836ffa-b9bc-4714-bff8-8d975484a54b/docker/data
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: true
 Product License: Community Engine

systemctl --user status docker


● docker.service - Docker Application Container Engine (Rootless)
     Loaded: loaded (/home/omdocker/.config/systemd/user/docker.service; enabled; vendor preset: enabled)
     Active: active (running) since Thu 2022-11-17 22:05:42 CET; 1h 13min ago
       Docs: https://docs.docker.com/go/rootless/
   Main PID: 575466 (rootlesskit)
      Tasks: 583
     Memory: 675.0M
        CPU: 2min 49.151s
     CGroup: /user.slice/user-1003.slice/user@1003.service/app.slice/docker.service
             ├─575466 rootlesskit --net=slirp4netns --mtu=65520 --slirp4netns-sandbox=auto --slirp4netns-seccomp=auto --disable-host-loopback --port-driver=builtin --copy-up=/et>
             ├─575482 /proc/self/exe --net=slirp4netns --mtu=65520 --slirp4netns-sandbox=auto --slirp4netns-seccomp=auto --disable-host-loopback --port-driver=builtin --copy-up=>
             ├─575500 slirp4netns --mtu 65520 -r 3 --disable-host-loopback --enable-sandbox --enable-seccomp 575482 tap0
             ├─575508 dockerd
             ├─575525 containerd --config /run/user/1003/docker/containerd/containerd.toml --log-level info
....

Start by reproducing the rootless systemd service shown in the report and inspect daemon.log alongside DOCKER_CONFIG and /home/omdocker/.docker/config.json. Confirm which component emits the message and define done as a reproducible diagnosis with a verified correction.