Add gitea and a generic container role

docs/general.md

@@ -3,6 +3,10 @@ These variables are required by multiple roles. Example values included.
 
 ```
 timezone: 'Europe/Helsinki'
+admin_email: 'admin@domain.tld'
+
+smtp_server: smtp.domain.tld
+smtp_from: sender@domain.tld
 ```
 
 # Optional variables

docs/gitea.md

@@ -0,0 +1,15 @@
+# Required variables
+These variables are required. Example values included. Some general variables might also be required for this role.
+
+```
+ports:
+  gitea:
+    http: 8080
+
+docker_vhost_domains: 
+  gitea:
+    - gitea.domain.tld
+
+database_passwords:
+  gitea: secret
+```