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pitcrew

•Created by pitcrew on 4/21/2025 in #help

Docker in Docker on envbuilder has permission issues on non-root user Devcontainers.

Hi all, I was able to run native Coder on my Linux machine, and everything is now working. My question is just that when I use Envbuilder to build devcontainer, the docker socket runs properly, but I can't seem to apply the necessary Docker permissions on the coder user, only the root has access to docker CLI. I am using sysbox, my resource "docker_container" contains

{
  ...
  runtime = "sysbox-runc"
  restart = "always"
  ...
}

{
  ...
  runtime = "sysbox-runc"
  restart = "always"
  ...
}

For reference, I already tried these commands below, I also logged in to another shell, but the same issue persists.

coder@turquoise-muskox-97:/workspaces$ sudo usermod -aG docker coder
coder@turquoise-muskox-97:/workspaces$ newgrp docker
coder@turquoise-muskox-97:/workspaces$ groups
docker root
coder@turquoise-muskox-97:/workspaces$ sudo chmod -R 777 /var/run/docker.sock
coder@turquoise-muskox-97:/workspaces$ sudo ls -l /var/run/docker.sock
srwxrwxrwx 1 root docker 0 Apr 21 01:46 /var/run/docker.sock
coder@turquoise-muskox-97:/workspaces$ id
uid=1000(coder) gid=997(docker) groups=997(docker),0(root)
coder@turquoise-muskox-97:/workspaces$ ls -l /var/run/docker.sock
ls: cannot access '/var/run/docker.sock': Permission denied
coder@turquoise-muskox-97:/workspaces$ docker run hello-world
docker: permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Head "http://%2Fvar%2Frun%2Fdocker.sock/_ping": dial unix /var/run/docker.sock: connect: permission denied

Run 'docker run --help' for more information
coder@turquoise-muskox-97:/workspaces$ sudo docker run hello-world

Hello from Docker!
This message shows that your installation appears to be working correctly.

...

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

coder@turquoise-muskox-97:/workspaces$

coder@turquoise-muskox-97:/workspaces$ sudo usermod -aG docker coder
coder@turquoise-muskox-97:/workspaces$ newgrp docker
coder@turquoise-muskox-97:/workspaces$ groups
docker root
coder@turquoise-muskox-97:/workspaces$ sudo chmod -R 777 /var/run/docker.sock
coder@turquoise-muskox-97:/workspaces$ sudo ls -l /var/run/docker.sock
srwxrwxrwx 1 root docker 0 Apr 21 01:46 /var/run/docker.sock
coder@turquoise-muskox-97:/workspaces$ id
uid=1000(coder) gid=997(docker) groups=997(docker),0(root)
coder@turquoise-muskox-97:/workspaces$ ls -l /var/run/docker.sock
ls: cannot access '/var/run/docker.sock': Permission denied
coder@turquoise-muskox-97:/workspaces$ docker run hello-world
docker: permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Head "http://%2Fvar%2Frun%2Fdocker.sock/_ping": dial unix /var/run/docker.sock: connect: permission denied

Run 'docker run --help' for more information
coder@turquoise-muskox-97:/workspaces$ sudo docker run hello-world

Hello from Docker!
This message shows that your installation appears to be working correctly.

...

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

coder@turquoise-muskox-97:/workspaces$

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