How to fix docker: Got permission denied issue

Question

I installed Docker in my machine where I have Ubuntu OS. After than I installed docker, when I run

sudo docker run hello-world

All it\'s ok

Answer 1

After you installed docker, created 'docker' group and added user to it, edit docker service unit file:

sudo nano /usr/lib/systemd/system/docker.service

Add two lines into the section [Service]:

SupplementaryGroups=docker    
ExecStartPost=/bin/chmod 666 /var/run/docker.sock

Save the file (Ctrl-X, y, Enter)

Run and enable the Docker service:

sudo systemctl daemon-reload
sudo systemctl start docker
sudo systemctl enable docker