Sets an APP_VERSION config string for git deploys. The format of the version string is $deploy_branch.$updated_at. Where $updated_at is the seconds from Epoch of the last commit to the deploy branch.
If the deploy branch represents a version ending with a .x suffix e.g. 1.1.x, the .x will be substituted with $updated_at.
sudo dokku plugin:install https://github.com/AccountAim/dokku-gitversion.git