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Add support for expand #21

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@henti henti commented May 10, 2025

When adding mulitple hosts on a single cloudflare domain, the additional domains will be added as "Subject Alternative Name" and the certificate will need to be updated. Since the default setting in certbot is to ask, this fails.

This change adds support for CERTBOT_EXPAND, which when set to true, will add the --expand option on the certbot run.

Fixes #20

When adding mulitple hosts on a single cloudflare domain, the additional domains will be added as "Subject Alternative Name" and the certificate will need to be updated. Since the default setting in certbot is to ask, this fails.

This change adds support for CERTBOT_EXPAND, which when set to true, will add the `--expand` option on the certbot run.
Removed entry for CERTBOT_EXPAND in Dockerfile as it's optional.
Updated docs to include CERTBOT_EXPAND
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Updating domains breaks startup.
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