permission denied while trying .. Docker demon socket Troubleshooting

After running sudo apt-get install docker, docker compose to deploy a Spring Boot Application using Docker and Docker Compose.

However, when docker ps is entered,

permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/json": dial unix /var/run/docker.sock: connect: permission denied

This error message appeared.

Docker commands were not working due to a Docker permission issue. The problem was that I was trying to run Docker as a non-root user.

Solution #

Create docker group #

$ sudo groupadd docker

Add user to docker group #

$ sudo usermod -aG docker $USER

Log in to the new group #

$ newgrp docker

By doing this, you can see it working correctly.