Database declaration per changeSet from command line execution

I know you can set up the database configurations in the file(s) and declare with properties file to use when you invoke liquibase from the command line.  Is there any way to set that information on a changeSet declaration level.  I work with several properties, all of which have their own code repository.  I’d like to be able to have the change sets stored in those repositories and have Bamboo automatically run them on a code push.  But some of these properties actually use multiple databases and there is a possibility of multi-database changeSets on a single push.

If this is in the docs, please point me to it.  I’ve looked around and didn’t find it.