Bounty: 50
Since a few days, I can’t run any docker containers on my machine (Ubuntu 18.04). Whenever I try to run/start a container, I receive an error which says that the entrypoint file can’t be executed:
$ sudo docker run --name test nginx
sh: 0: Can't open /docker-entrypoint.sh
or
$ docker run --name test2 mongo:4.0
WARNING: Error loading config file: /home/myUser/.docker/config.json: stat /home/myUser/.docker/config.json: permission denied
/bin/bash: /usr/local/bin/docker-entrypoint.sh: Permission denied
The second error message leads me to the conclusion, that I might have access problem to the whole docker VM. So, this is the current permission setting on the .docker folder:
$ sudo ls -l /home/myUser/.docker
total 4
drwx------ 5 root root 4096 Nov 21 2019 machine
From my point of view, it should be fine (at least when the docker run/start command is executed as superuser…). Hence, it must be somewhere else.
What I tried/consulted so far:
- reinstall docker => worked fine until the next reboot…
- this post for permission issues when the entrypoint file is copied into the container from the host (which doesn’t apply to my case where no pre-built image is started…)
- desperately scraping the web for other relevant posts without luck
I’m open to any suggestions and would be glad to deliver further details about my setting if necessary.
Edit: I followed the instructions on docker for the installation and used apt-get.
I don’t get any results when executing env | grep DOCKER…
Below the result of docker info:
$ docker info
WARNING: Error loading config file: /home/myUser/.docker/config.json: stat /home/myUser/.docker/config.json: permission denied
Client:
Debug Mode: false
Server:
Containers: 9
Running: 0
Paused: 0
Stopped: 9
Images: 21
Server Version: 19.03.11
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
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: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc version:
init version: fec3683
Security Options:
apparmor
seccomp
Profile: default
Kernel Version: 5.3.0-53-generic
Operating System: Ubuntu Core 16
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 15.54GiB
Name: my-laptop
ID: ****:****:some:code
Docker Root Dir: /var/snap/docker/common/var-lib-docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Edit 2 (or rather a fun fact): I can run the hello-world example from docker. So, the problem is that the permission inside the docker container aren’t enough… why?
Edit 3: Thanks to @Sysadmin, I could remove the warning during the load of config.json by following the instructions of this post