add env_vars nobuild

collabora/config.yaml

@@ -13,6 +13,7 @@ map:
   - ssl:ro
 name: Collabora
 options:
+  env_vars: []
   aliasgroup1: ""
   certfile: fullchain.pem
   domain1: ""
@@ -28,6 +29,9 @@ ports:
 ports_description:
   9980/tcp: Web interface
 schema:
+  env_vars:
+    - name: match(^[A-Z0-9_]+$)
+      value: str?
   TZ: str?
   aliasgroup1: str
   cert_domain: bool?