The user needs to Log out and log back into the Ubuntu server so that group membership is re-evaluated. After that the user will be able to run Docker commands without using root or sudo. After that the user will be able to run Docker commands without using root or sudo.
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Jan 16, 2020 · It is mostly used for administrative purposes; providing limited admin access to non administrative users on a Linux PC. For example, by default, a user is not allowed to install packages on an Ubuntu system. However, the user can do so with sudo command. Non-root user without sudo cannot install a program. See an example failed attempt below:
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Jun 15, 2017 · To add your user to the admin group, you would issue the command (as a user who already has full sudo privileges): sudo usermod -a -G sudo USERNAME Where USERNAME is the name of the user to be added.
How to Create a Sudo User on Ubuntu | System On Grid