Fix #759 - railsserver add healthcheck

[derpixler]

Fix #759 - railsserver add healthcheck to check if localhost:3000 available

[mgruner]

@derpixler when trying this, it does not seem to work for me.

I set the healthcheck to fail by specifying this via .env:

ZAMMAD_RAILSSERVER_PORT=3001

So that the railsserver will listen on 3000 (as the ENV is not passed to the container), but the healthcheck will listen on the wrong port and fail.

However, zammad-nginx will start immediately, as if no health check were defined. Did I miss something?

[derpixler]

@derpixler when trying this, it does not seem to work for me.

I set the healthcheck to fail by specifying this via .env:

ZAMMAD_RAILSSERVER_PORT=3001

So that the railsserver will listen on 3000 (as the ENV is not passed to the container), but the healthcheck will listen on the wrong port and fail.

However, zammad-nginx will start immediately, as if no health check were defined. Did I miss something?

Update @see
https://github.com/zammad/coordination-technical-debt/issues/759#issuecomment-4198804625