Back in January, I tried colima and hit a snag on getting onto AWS ECR boxes. It ends up it was probably an issue with not being able to use the existing credentials file and I could have fixed it...
Today (Aug 2022) I am giving it another college try.
brew upgrade colima
ls -l $(which docker)
brew install docker
ln -s /Applications/Docker.app/Contents/Resources/bin/docker /usr/local/bin/docker-desktop
brew link --overwrite docker
brew install docker-credential-helper