The big feature missing from deployments today is healthchecks, which require extra parsing of the app.json format since the healthchecks there aren't immediately serializable to kubernetes deployment healthchecks.
Other smaller missing functionality from the existing OSS kubernetes scheduler are:
- The ability to set custom pod annotations
- The ability to set custom deployment annotations
- The ability to mount volumes
Exposing these pieces of functionality will come at a later date, if at all.
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