What is your suggestion?

The docker template gives an option to build a workspace for java which uses codercom/enterprise-java

This does not include IntelliJ, so I recommend replacing this image with the codercom/enterprise-intellij which inherits from the java image.

https://hub.docker.com/r/codercom/enterprise-intellij

Why do you want this feature?

I cannot use IntelliJ with JetBrains Gateway (or projector) without this change.

Are there any workarounds to get this functionality today?

I could manually curl IntelliJ in the Java workspace but it will be lost when I shut it down.

Are you interested in submitting a PR for this?

No