How to execute same change log on different schemas on the same mongo node?

I Have to run the same mongodb change log across multiple databases.

Mongodb liquibase properties file as follows.

hangeLogFile: dbchangelog.json
url: mongodb://localhost:27017/liquibasepocdb?authSource=admin
username: xxxxxxx
password: xxxxxxx

In my case i am able to create index on test liquibasepocdb db only
I have many such databases , how we can execute same change on all databases?
I read the contexts documents but no luck how we can do this using contexts?

Please share the sample example