Add Docker Healthcheck to both containers.

[GAS85]

What type of PR is this?

• feature

What this PR does / why we need it:

This PR introduced Docker Healthcheck to normal and rootless containers. It is Based on GoogleContainerTools/distroless#183 (comment)

Which issue(s) this PR fixes:

Fixes #890

Special notes for your reviewer:

You asked for PR 😄

Testing

Container was build and after 30 Seconds marked as healthy. Also GET request to the / can be seen in the logs.

Release Notes

- Add `wget` to `rootless` container.
- Introduced Healthcheck to containers.

[zodac]

I think it might be better to hit the status endpoint, rather than just the root URL? At http://localhost:7745/api/v1/status, for example.

[GAS85]

Didn't know about this endpoint. Hope it returns anything else than 200 if not healthy.