How can I include the C4-PlantUML library in my .puml files so the app renders them?

@startuml
!include <C4/C4_Container>
Person(personAlias, "Label", "Optional Description")
Container(containerAlias, "Label", "Technology", "Optional Description")
System(systemAlias, "Label", "Optional Description")
System_Ext(extSystemAlias, "Label", "Optional Description")
Rel(personAlias, containerAlias, "Label", "Optional Technology")
Rel_U(systemAlias, extSystemAlias, "Label", "Optional Technology")
@enduml