permission denied while trying to connect to the Docker daem

The error message you're seeing indicates that the process trying to connect to the Docker daemon is lacking the necessary permissions to access the Docker socket at `/var/run/docker.sock`. This is a common issue when the user running the command does not have the appropriate permissions or is not a member of the `docker` group. Here are the steps you can take to resolve this issue: 1. **Check if Docker is running**: Make sure that the Docker service is active and running on your system. ```bash sudo systemctl status docker ``` If it's not running, start it with: ```bash sudo systemctl start docker ``` 2. **Add your user to the `docker` group**: The most common solution is to add your user to the `docker` group, which grants the necessary permissions to access the Docker socket. ```bash sudo usermod -aG docker $USER ``` After running this command, you will need to log out and log back in for the changes to take effect. 3. **Check the ownership and permissions of `/var/run/docker.sock`**: The socket file should be owned by `root` and have the group set to `docker`. The permissions should allow members of the `docker` group to read and write to the socket. ```bash ls -l /var/run/docker.sock ``` If the permissions are incorrect, you can set them with: ```bash sudo chown root:docker /var/run/docker.sock sudo chmod 770 /var/run/docker.sock ``` 4. **Check for AppArmor or SELinux policies**: If you're running AppArmor or SELinux, it might be enforcing policies that prevent access to the Docker socket. You may need to adjust the policies accordingly. 5. **Use `sudo`**: As a temporary workaround, you can prefix your Docker commands with `sudo` to execute them with root privileges, which will have access to the Docker socket. ```bash sudo docker run -it ubuntu ``` 6. **Check for running Docker daemons**: Sometimes, multiple Docker daemons can cause conflicts. Ensure that only one instance of the Docker daemon is running. 7. **Reinstall Docker**: If none of the above steps work, you may need to uninstall and then reinstall Docker to ensure that it's set up correctly. ```bash sudo apt-get remove docker docker-engine docker.io containerd runc sudo apt-get install docker.io ``` After performing these steps, try running your Docker command again. If you continue to face issues, you may need to investigate further into the specific configuration of your system.