Answers for "install nodejs lts on ubuntu 18.04"

install nodejs ubuntu 19.04

sudo apt install curl
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
sudo apt-get update
sudo apt-get install nodejs
nodejs -v
npm -v

install docker on ubuntu 18.04

sudo apt install docker-ce
https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-18-04

how to uninstall python2.7 from ubuntu 18.04

whereis python
which python