If you are getting an error running the docker command as a non-root user,
devops@codetryout:~$ docker ps
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get https://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/json: dial unix /var/run/docker.sock: connect: permission denied
devops@codetryout:~$
Solution: Provide group permission and docker.sock file permission.
Solution #1: Run the command using sudo
sudo docker <COMMAND>Example for running the docker command using sudo:
devops@codetryout:~$ sudo docker run hello-world
Solution #2: Add user to docker group
Provide group permission and docker.sock file permission by creating user-group docker and add the user to it
# Creating a group - docker
sudo groupadd docker
# Adding user to the group "docker"
sudo usermod -aG docker $USERProvide read write permission to docker.sock file
The below will fix the error, docker: Got permission denied while trying to connect to the Docker daemon socket
sudo chmod 666 /var/run/docker.sock
Official documentation on post-install tasks, https://docs.docker.com/engine/install/l…stinstall/