docs: update Basic-usage.md

[yoriiis]

There is a difference between docker compose example and docker run for the acme-companion service about the certificat volume.

https://github.com/nginx-proxy/acme-companion/blob/main/docs/Docker-Compose.md?plain=1#L45

I imagine that the docker compose is the right syntax

[buchdag]

Hi.

In the compose file example, the nginx-proxy container mount the certs volume as :ro, so it need to be explicitly mounted as :rw on the acme-companion container.

In the Docker run example, the command for the nginx-proxy container does not specify :ro or :rw for this volume, so it defaults to :rw and the acme-companion container get the volume with the correct read/write permission through --volumes-from nginx-prox alone.

Both versions will work equally well, it boils down to restricting nginx-proxy write permission to the certs volume or not.

[yoriiis]

Hello @buchdag thanks for the explanation.

It might be a good idea to harmonize/synchronize to have the same implementation, but I'll let you decide that.

Thanks, you're free to close the issue.