lets say I have a golang serverless function I want to want to deploy to AWS, golang functions need to be compiled before uploading, does pulumi provide this capability (similar to the docker build capability)

Not currently - you would need to build it out of band of

pulumi update

. But a library similar (but likely much simpler than)

@pulumi/docker

could easily be built to take care of doing the builds as part of the deployment itself.