FROM command in Earthly has the ability to reference another target's image as its base image, like in the case below where the +build target uses the image from the +deps target.FROM also has the ability to import targets from Earthfiles in different directories. Let's say we have a directory structure like this./services/service-one from inside the Earthfile in the root of our directory../services/service-one/Earthfile./EarthfileFROM that there is another Earthfile in the services/service-one directory and that the Earthfile contains a target called +deps. In this case, if we were to run +build Earthly is smart enough to go into the subdirectory, run the +deps target in that Earthfile, and then use it as the base image for +build.IMPORT command../services/service-one directory that contains its own Earthfile. We import it and then use the AS keyword to give it an alias.+build target we can inherit from any target in the imported Earthfile by passing alias+target-name. In this case the Earthfile in the service directory has a target named +deps.