Fix issues reported by ansible-lint

_ansible/roles/harbor/vars/main.yml

@@ -1,3 +1,4 @@
+---
 svc_ports:
   http: 20080
   https: 20443
@@ -5,7 +6,8 @@ svc_ports:
 
 svc:
   name: harbor
-  domain: "registry.serguzim.me"
+  no_compose: true # TODO remove when fixing "var-naming[no-role-prefix]"
+  domain: registry.serguzim.me
   caddy_extra: |
     reverse_proxy /metrics host.docker.internal:{{ svc_ports.metrics }}
     reverse_proxy host.docker.internal:{{ svc_ports.https }} {
@@ -75,9 +77,9 @@ svc_yml:
       max_idle_conns: 2
       max_open_conns: 0
   proxy:
-    http_proxy: null
-    https_proxy: null
-    no_proxy: null
+    http_proxy:
+    https_proxy:
+    no_proxy:
     components:
       - core
       - jobservice