Is this any kind of JSON? Or does it have to be at least a JSON object, {}?

It should be at least {}. I will fix it.

For my own understanding...
Since Freshmaker is not done determining which artifacts to build, we could think of this as "initializing" instead, right?

Is this after or before Freshmaker has determined which artifacts to build?

Do you think it makes sense to track attempt attribute to indicate how many time the build has been retried?

I'm curious, what exactly is an IMAGE_REPOSITORY artifact?

Yeah, "initializing" would probably be better name, but "initialized" is what we already use in the API.

Before, it's when it is moved to initialized state, which is the first state when event is created in db.

:thumbsup: This is great! Thanks for doing this.