lsb_release: command not found in latest Ubuntu Docker container

Question

I just wanted to test something out real quick. So I ran a docker container and I wanted to check which version I was running:

$ docker run -it ubuntu    
ro         


        

Answer 1

This error can happen due to uninstalling or upgrading the default python3 program version in ubuntu 16.04

The way to correct this is by reinstalling the original python3 version which comes with ubuntu and relinking again. (in ubuntu 16.04 - the default python3 version is python 3.5

sudo rm /usr/bin/python3
sudo ln -s /usr/bin/python3.5 /usr/bin/python3