No error reported when container did not start

[glennblock]

I tried to create a sidecar locally, and it looked like it work. I got all the output indicating that it was properly configured. When starting the container, there were errors that prevented it from starting (the rego did used deprecated functions), but there was no output indicating it did not start.

docker ps showed me nothing started.

Using aserto x run gave me more detailed output to show what was wrong.

Minimally we should say "Container could not start" or something if it never starts. It is not a good experience to make it look like everything is ok when it is not.