Apt-get update cheatsheet for Ubuntu/Debian

sudo apt-get update        # Fetches the list of available updates
sudo apt-get upgrade       # Strictly upgrades the current packages
sudo apt-get dist-upgrade  # Installs updates (new ones)

Debian ‘ps’ command from Apt

A lot of minimal Debian distros don’t have the `ps` process status app by default. There are times it’s useful when you want to inspect a container from the inside, so add:

`apt-get install -y procps`

to your build or manually install it after. Adds about 1MB to your environment.