separate smtp config (#12)

Reviewed-on: https://git.coopcloud.tech/coop-cloud/plausible/pulls/12
Co-authored-by: stevensting <stefan@klasse-methode.it>

compose.yml

@@ -13,20 +13,11 @@ services:
       - SECRET_KEY_BASE
       - DATABASE_URL=postgres://plausible:plausible@${STACK_NAME}_db:5432/plausible
       - CLICKHOUSE_DATABASE_URL=http://${STACK_NAME}_events:8123/plausible_events_db
-      - MAILER_ADAPTER
-      - SMTP_HOST_ADDR
-      - MAILER_EMAIL
-      - MAILER_NAME
-      - SMTP_HOST_PORT
-      - SMTP_USER_NAME
-      - SMTP_USER_PWD
-      - SMTP_HOST_SSL_ENABLED
       - DISABLE_REGISTRATION
       - LOG_LEVEL
     secrets:
       - totp_secret
       - key_base
-      - smtp_password
     configs:
       - source: plausible_entrypoint
         target: /plausible_entrypoint.sh
@@ -151,6 +142,3 @@ secrets:
   key_base:
     name: ${STACK_NAME}_key_base_${SECRET_KEY_BASE_VERSION}
     external: true
-  smtp_password:
-    name: ${STACK_NAME}_smtp_password_${SECRET_SMTP_PASSWORD_VERSION}
-    external: true