Are services in /usr/local/etc/rc.d supposed to start?

[jhfoo]

Thinking this is a great config for sidecars (Consul) to run, but the containers keep quitting as soon as they start. Specifically I'm trying to start buildkite-agent (installed from pkg)

I read somewhere it's because there's no stdin and causes containers to stop immediately. There's an article about setting entrypoint to tail -f /dev/null but that seems to deny attachments to the container.

So some examples suggest running (nginx for example) the app directly from entrypoint. Is this the recommended option? Is there really no way to make /rc services great again?

[jhfoo]

UPDATE: this works but there made be tradeoffs (possibly due to lack of understanding):

1. Attaching to the container returns an unresponsive interface. Ctrl-C on the attachment kills the connection. Ctrl-p-q exits safely. I need a way to extract logs interactively.

Are services really not working in containers? How will we do sidecars?