permission denied while trying to connect to the Docker daemon

This error typically occurs when you are trying to execute a Docker command without sufficient permissions. To resolve this issue, you can try the following steps:

1. Ensure that you are running the Docker command with root or sudo privileges. For example, you can use `sudo docker <command>` instead of `docker <command>`.

2. Check if the Docker daemon is running. You can use the following command to verify its status:

   sudo systemctl status docker

If the Docker daemon is not running, start it using the following command:

   sudo systemctl start docker

3. Add your user to the `docker` group to avoid using `sudo` for Docker commands. You can do this by executing the following command:

   sudo usermod -aG docker $USER

After running this command, make sure to log out and log back in for the changes to take effect.

4. If the issue persists, you can try restarting the Docker service:

   sudo service docker restart

By following these steps, you should be able to resolve the "permission denied" error when trying to connect to the Docker daemon.