Long time ago we had simple instalation procedure for docker. It can be installed by root or by unpriveleged user. There was some differences.

For now, installing Docker is even simplier than couple years ago. There are 2 main ways:

• 1. Setup a repository for easy update in future (recomended)
• 2. By hand for difficult update in future

Recomended way

Update index of package database:

sudo apt update

Install required packages:

sudo apt-get install \
    ca-certificates \
    curl \
    gnupg \
    lsb-release

Add Docker’s official GPG key:

Once uppon a time I had forgotten a password to one of my wordpress login. I need it because I need to update wordpress in case I had interesting read about new Critical Log4Shell (Apache Log4j) Zero-Day Attack. After no luck searching in lastpass records and keep cards I decided to go next step of difficulity. Also, level up or remember some of my devops oldtimes.

So I managed a simple steps to recover access: