How to split WebSphere virtual hosts, single webserver for multiple JVMs

How can I configure the virtual hosts to send the right url to the right JVM, when all of the apps use the same context root?

eg:

• https://app1.mydomain.com/myapp -> app1 JVM
• https://app2.mydomain.com/myapp -> app2 JVM
• https://app3.mydomain.com/myapp -> app3 JVM

Info

I have multiple JVMs, and all apps have the same context root:

• app1 (context root: /myapp) (internal port: 9080)
• app2 (context root: /myapp) (internal port: 9081)
• app3 (context root: /myapp) (internal port: 9082)

I have one webserver:

• webserver1

I have multiple subdomains:

• app1.mydomain.com
• app2.mydomain.com
• app3.mydomain.com

Notes

• I'm trying to avoid using multiple IP addresses or webservers
• Running Websphere 9.0.0.6, IBM HTTP Server (Apache), Windows 2016

If you define three virtual hosts in WAS, each with the right non-wildcard host aliases and map each respective application to its virtualhost, the generated plugin-cfg.xml will route the way you want.