Merge pull request #2362 from twistlock/populate_htpasswd

Create and populate htpasswd file if missing

cmd/registry/config-example.yml

@@ -11,6 +11,10 @@ http:
   addr: :5000
   headers:
     X-Content-Type-Options: [nosniff]
+auth:
+  htpasswd:
+    realm: basic-realm
+    path: /etc/registry
 health:
   storagedriver:
     enabled: true