Ability to stop an agent when a job completes

[Eldarrin]

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What happened?

Feature Request (not a bug):
I would like to use ephemeral workers for deployment jobs, so that when the job completes it kills the working container. So, a simple flag ("--ephemeral" or "--once") which means when a job completes it gracefully exits the tentacle.

This will allow me to put the workers behind a queuing system in my cluster and schedule as needed rather than keeping resource held when not needed and is more efficient and stable than using HPA/replica sets.

Reproduction

Run a tentacle in a container and it stays up after completing a job

Error and Stacktrace

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More Information

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Workaround

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