services: certbot: Get certbot to run non-interactively.

* doc/guix.texi (Certificate Services): Add email field and link to the ACME
Subscriber Agreement.
* gnu/services/certbot.scm (<certbot-configuration>, certbot-command,
certbot-activation, certbot-nginx-server-configurations): Add email field.
(certbot-command): Add '-n' and '--agree-tos' options.
(certbot-service-type): Remove default-value.

1 files changed, 8 insertions, 0 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index ff3fa97d7f..241d41bfd3 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -15741,6 +15741,10 @@ revoked, but running it regularly would give your service a chance of
 staying online in case a Let's Encrypt-initiated revocation happened for
 some reason.
 
+By using this service, you agree to the ACME Subscriber Agreement, which
+can be found there:
+@url{https://acme-v01.api.letsencrypt.org/directory}.
+
 @defvr {Scheme Variable} certbot-service-type
 A service type for the @code{certbot} Let's Encrypt client.
 @end defvr
@@ -15761,6 +15765,10 @@ files.
 A list of domains for which to generate certificates and request
 signatures.
 
+@item @code{email}
+Mandatory email used for registration, recovery contact, and important
+account notifications.
+
 @item @code{default-location} (default: @i{see below})
 The default @code{nginx-location-configuration}.  Because @code{certbot}
 needs to be able to serve challenges and responses, it needs to be able