Revert "fix gerrit weburl"

This reverts commit f09bd08610b21fd5abaefc10b8ff39b66d2bd668.
diff --git a/docker/swarm/stack/gerrit.yml b/docker/swarm/stack/gerrit.yml
index 48466ef..b59172a 100644
--- a/docker/swarm/stack/gerrit.yml
+++ b/docker/swarm/stack/gerrit.yml
@@ -39,7 +39,7 @@
                 LDAP_GROUPBASE: ${_param:gerrit_ldap_group_base}
                 LDAP_USERNAME: ${_param:gerrit_ldap_bind_user}
                 LDAP_PASSWORD: ${_param:gerrit_ldap_bind_password}
-                WEBURL: http://${_param:gerrit_public_host}:8080
+                WEBURL: ${_param:gerrit_public_host}
                 GERRIT_ADMIN_SSH_PUBLIC: ${_param:gerrit_admin_public_key}
                 GERRIT_ADMIN_PWD: ${_param:gerrit_admin_password}
                 GERRIT_ADMIN_EMAIL: ${_param:gerrit_admin_email}