Feature request: Support for docker healthcheck command
<!-- You must use the issue template below when submitting a support request -->
Feature request:
Docker supports a healthcheck in this way:

```
HEALTHCHECK --interval=12s --timeout=12s --start-period=30s \  
 CMD node /healthcheck.js
```
**Describe Your Problem:**
<!-- A clear and concise description of what problem you are trying to solve. -->
Would be nice if you could implement such functionality. I have seen, that config-UI contains some healthcheck in the code.

