feat: add functional option for startup commands #1647
Merged
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What does this PR do?
This PR adds a functional option to run arbitrary commands in the container that uses them.
The startup commands will be treated as an slice of strings that will be executed in the container right after it's started. For that, it will leverage the lifecycle hooks of the container, more specifically the
PostStarts
hooks. A new lifecycle hook will be created, which will be appended to the existing lifecycle hooks.Finally, the new functional option has been documented in all existing modules, including the template for new ones.
Why is it important?
Containers, and more importantly modules, many time needs to run commands right after they are started to define a desired state. With this approach, we will simplify the way they users add those startup commands when defining a request for a container or a module.