Change log format to console earlier in the execution

[lucaslorentz]

Even when log format is configured as console inside caddyfile, there are too many messages logged before the logger is configured: https://github.com/lucaslorentz/caddy-docker-proxy/issues/262#issuecomment-854103751

Ideally, the base caddyfile should be used to kickstart caddy server, reducing the log messages before the logger is configured.