don't create devpod user

[raylu]

devpod assumes the username is devpod:

devpod-provider-aws/pkg/aws/aws.go

Line 968 in f34446e

useradd devpod -d /home/devpod

in our case, we were already using devcontainers (in VS Code) with a pre-built image. we hard-coded the user in that image to something else and our initializeCommand assumes paths like /home/user/.pyenv/versions/envname/bin/activate