Override global acme_dns and use HTTP-01 challenge for specific domain

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For anyone (including myself :sweat_smile:) who sees this later, my syntax was incorrect on the conf_tls_zerossl_dns snippet; it resulted in the following error:
Error during parsing: cannot mix issuer subdirective (explicit issuers) with other issuer-specific subdirectives (implicit issuers)

The correct syntax is:

(conf_tls_zerossl_dns) {
	tls {
		issuer zerossl {env.CADDY_CERT_ZERO_API_KEY} {
			dns cloudflare {env.CADDY_CF_API_TOKEN}
			# DNS Challenge automatically disables HTTP & TLS-ALPN challenges
		}
	}
}

Though I did wonder, does the globally declared email config properly make it’s way down to this site-specific tls block or do I need to include the email command inside each block? (as shown here: How to specify both issuer and acme dns at the same time? - #8 by francislavoie )