Migrate to using a wildcard certificate

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I’m talking about our “due to parsing difficulties” error:

$ cat Caddyfile
:80

map {hostname} {ip} {
	foo.example.com 1.2.3.4
	bar.example.com 2.3.4.5:8080
	default 4.5.6.7
}

reverse_proxy http://{ip}


$ ./caddy adapt --pretty
2021/03/02 15:17:11.650	INFO	using adjacent Caddyfile
adapt: parsing caddyfile tokens for 'reverse_proxy': Caddyfile:9 - Error during parsing: due to parsing difficulties, placeholders are not allowed when an upstream address contains a scheme

You would need to explicitly define the port for each entry in the map to :80 and then omit http://.