Liquibase and Docker

I am trying to use the container version of Liquibase.  When I run the container, It exits almost immediately.  Is this by design?  Also, how would i use the updateSql command.  When I try to use it, it tells me it can not find the changelog file.  Below is the command I am using.

Thanks

docker run liquibase/liquibase --driver=org.postgresql.Driver --classpath=/usr/share/java/postgresql.jar --url="jdbc:postgresql://host.docker.internal/Barry" --changeLogFile=dbchangelog.xml --username=postgres --password=Fender!23 generateChangeLog