Add step to source /etc/os-release #26410

Is this a docs issue?

• My issue is about the documentation content or website

Type of issue

Other

Description

Documentation is incomplete. Add a step before adding the repo to:

source /etc/os-release

to set the environment variables used in the command.

Location

https://docs.docker.com/engine/install/ubuntu/

Suggestion

Documentation is incomplete. Add a step before adding the repo to:

source /etc/os-release

to set the environment variables used in the command.