Root password inside a Docker container

Question

I\'m using a Docker image which was built using the USER command to use a non-root user called dev. Inside a container, I\'m \"dev\", but I want to edit the

Answer 1

You can SSH in to docker container as root by using

docker exec -it --user root  /bin/bash

Then change root password using this

passwd root

Make sure sudo is installed check by entering

sudo

if it is not installed install it

apt-get install sudo

If you want to give sudo permissions for user dev you can add user dev to sudo group

usermod -aG sudo dev

Now you'll be able to run sudo level commands from your dev user while inside the container or else you can switch to root inside the container by using the password you set earlier.

To test it login as user dev and list the contents of root directory which is normally only accessible to the root user.

sudo ls -la /root

Enter password for dev

If your user is in the proper group and you entered the password correctly, the command that you issued with sudo should run with root privileges.