use rails credentials for smtp creds

config/deploy.yml

@@ -2,7 +2,7 @@
 service: sanasto-wiki
 
 # Name of the container image.
-image: your-username/sanasto-wiki
+image: soverein/sanasto-wiki
 
 # Deploy to these servers.
 servers:
@@ -42,17 +42,8 @@ env:
     RAILS_LOG_TO_STDOUT: true
     RAILS_SERVE_STATIC_FILES: true
     SOLID_QUEUE_IN_PUMA: true
-
-    # Mail server config
-    SMTP_ADDRESS: mail.soverein.no
-    SMTP_PORT: 587
-    SMTP_DOMAIN: frostshipdesign.no
-    SMTP_AUTHENTICATION: plain
-    SMTP_ENABLE_STARTTLS_AUTO: true
   secret:
     - RAILS_MASTER_KEY
-    - SMTP_USERNAME
-    - SMTP_PASSWORD
 
 # Use persistent storage volume for SQLite database and uploads
 volumes: