Testing #3051 **Repro** 1. Open a dev container 1. Then change the `postStartCommand` or `postAttachCommand` properties 1. Reload the window **Bug** See this notification: <img width="734" alt="Screen Shot 2020-06-02 at 4 25 11 PM" src="https://user-images.githubusercontent.com/12821956/83579309-c0f97600-a4ed-11ea-9cbe-914799ebafcf.png"> In this case, I don't think the container needs to be rebuilt
