This toolkit uses Docker to generate vectortiles from PostGIS database in order to use tippecanoe tool. So, please install Docker in your computer.
See official webpage to install it.
Linux container(Windows container is incorrect!)See official webpage to install it by Homebrew.
brew search docker
brew cask install docker
See official webpage to install it.
However, if it is Linux, you don’t actually need to install Docker. You can directly install tippecanoe on ubuntu to use these tools.