More default values including standard Caddyfile

[Ceddicedced]

Hi,

i think it would be cool if every entry of the ARGs presented in the Caddy CLI section of the README, would provide a default value.
Like some entries e.g. "--scan-stopped-containers" is providing a default value while "--docker-apis-version" is not.
It looks a little bit inconsistent. Maybe even placeholders like dafault "null" or "" would be helpfull.

Also while I was setting this up I kind of expected that the standard caddyfile under "/etc/caddy/Caddyfile" would be read, like in the dafault caddy package. It is nice that I can set this via the ENV to enable reading this file, but maybe this should be the default behavior, maybe also with an additional check if that file is empty. But maybe thats just some user eperience fact.

[ADV1K]

+1 to this, please change the default to always load the default Caddyfile at startup