Add the backend confirm-code relay env to compose (BACKEND_SMTP_HOST/PORT/
USERNAME/PASSWORD/FROM + BACKEND_PUBLIC_BASE_URL), sourced from SMTP_RELAY_* /
SMTP_RELAY_FROM / PUBLIC_BASE_URL. An empty host keeps the backend on the log
mailer so a contour without relay credentials still boots. Port defaults to 465
(implicit TLS). Map the TEST_ set in ci.yaml and the PROD_ set in prod-deploy.yaml
(both the deploy-main env and the env.sh heredoc). Document the six variables in
.env.example and the deploy README (secrets: user/pass; variables: host/port/from
+ the per-contour PUBLIC_BASE_URL, required whenever the relay host is set).
Ilia Denisov
a29e00ee13