healthcheck.sh: Fail when API call fails; No curl progress

[ashfire908]

Couple fixes to healthcheck.sh:

• Adds set -o pipefail to make sure jq fails when the curl call fails.
  • I assume this would be the intended behavior, though I wonder about if server startup takes too long (ie steam is updating the client still) that this might cause issues... If preferred, I can pull this out and research a better way to handle the health checks here.
• Silences curl progress, unless there's an error.
  • This quiets down the health check output, which currently looks like this on my system (note the curl output):
    

[wolveix]

Thanks for the PR @ashfire908!

Regarding the set -o pipefail aspect, presumably the health of the container would just drop to unhealthy until the download etc. are sorted. Am I misunderstanding this?

[ashfire908]

Yes, that is correct. I honestly didn't have a chance to do a full verification of it before (ie build a new image and run it, instead of just testing the changes piecemeal in the image with a simple shell), so I was unsure if docker/docker-compose would restart the container if the health check fails. I just checked, and it doesn't seem to do that. So I guess there are no issues in that context.

[wolveix]

Great stuff, thanks so much @ashfire908!