Sample Caddyfile (Caddy v2)

Caddyfile

# https://caddyserver.com/docs/caddyfile/options#global-options
{
	# debug

	# email address used for ACME registration
	email user@domain.com

	# use staging ACME CA for development
	# acme_ca https://acme-staging-v02.api.letsencrypt.org/directory
}

(cors) {
	@origin{args[0]} header Origin {args[0]}
	header @origin{args[0]} Access-Control-Allow-Origin "{args[0]}"
	header @origin{args[0]} Access-Control-Request-Method GET,POST,PUT,OPTIONS
	header @origin{args[0]} Access-Control-Max-Age 3600
	header @origin{args[0]} Access-Control-Allow-Credentials false
	header @origin{args[0]} Access-Control-Allow-Headers "X-Token, Accept, Authorization, Content
-Type, If-None-Match"
}

(log_common) {
	log {
		level debug
		output file /var/log/caddy/{args[0]}.access.log {
			roll_size 200MiB
			roll_keep_for 30d
		}
		format json {
			time_format iso8601
		}
		#format console
	}
}

static.example.com {
	import log_common static
	# tls internal

	root * /var/www
	file_server
}

app1.example.com {
	import log_common app1
	# allows CORS requests from this URL
	import cors https://app1.netlify.app
	# tls internal

	reverse_proxy http://localhost:8000
}

http://:8080 {
	import log_common localhost

	root * /var/www
	file_server
}