QNAP Container Station - Multiple dockers get Permission Denied

Question

I run a QNAP TS-453a at home running Container Station on it. Suddenly multiple containers got some sort of error about "Permission Denied". For example postgres\postgres returns: error: exec failed: permission denied nodered/node-red docker returns: exec ./entrypoint.sh: permission denied. And this continues in different forms for a total of 20 containers. Basically every container returns permission errors on the docker-entrypoint. I shared my docker.sock with 3 containers to maintain it: HomeAssistant, WatchTower and Portainer.

What I tried:

• Recreate the container from scratch
• Checked the permissions on the shared volumes
• Reinstalled Container Station/Docker
• Restart the QNAP NAS
• sudo chmod 666 /var/run/docker.sock

Answer 1

i had the same issue. After upgrade QTS the majority of my container as a error: exec failed: permission denied.
After investigation, it affects only containers that change user on their scripts.
I have found that the base image on the QTS container station was the issue. I remove the container and the associate image and renew the container and repull a new image and the problem has gone.
I think that Container station has affected the pull image because the permission on files on a fresh container was not the same after repull a new image.