Docker heathcheck support

[lmakarov]

Implement Docker heathcheck support similar to how we already have them for cli and db containers.

[sergey-zabolotny]

Healtcheck support already added.
https://github.com/docksal/service-web/blob/develop/apache2.2/Dockerfile
https://github.com/docksal/service-web/blob/develop/apache2.4/Dockerfile

or you mean somthing else?

[lmakarov]

Yep, missed that. Resolved via #11. Thanks