Provide easier way to find logs of imagebuild

Now we need to exec SQL below to get the correct imagebuild id, so that we can search it in logs. 

It would be great to have an easier way to reduce the steps we need to do

```
SELECT imageBuildInfo->>'$.log.url' FROM d_b_workspace_instance WHERE id='<instance_id>';
```

Using same instance_id or workspace_id like other components can make debugging and log searching easier too