Lightsail: multiple domain zones

[johnstaton]

It seems the lego/providers/dns/lightsail/lightsail.go file is setup for only one domain in the DNS_ZONE env variable. How feasible would it be to allow multiple domains at once or would it just be easier to switch to route53 since that configuration doesn't necessitate listing domains explicitly in the docker-compose?

Unless I'm misreading and a comma separated list just happens to not be the correct format if there are multiple domains.