diff --git a/installers/docker/__keystone__.env b/installers/docker/__keystone__.env
index da65f1f..90f9b6c 100644
--- a/installers/docker/__keystone__.env
+++ b/installers/docker/__keystone__.env
@@ -1,4 +1,35 @@
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
 ROOT_DB_PASSWORD=__MYSQL_ROOT_PASSWORD__
 KEYSTONE_DB_PASSWORD=__KEYSTONE_DB_PASSWORD__
 #ADMIN_PASSWORD=__ADMIN_PASSWORD__
 SERVICE_PASSWORD=__SERVICE_PASSWORD__
+####################
+# LDAP CONFIGURATION
+####################
+#LDAP_AUTHENTICATION_DOMAIN_NAME=__LDAP_AUTHENTICATION_DOMAIN_NAME__
+#LDAP_URL=__LDAP_URL__
+#LDAP_BIND_USER and LDAP_BIND_PASSWORD=__LDAP_BIND_USER and LDAP_BIND_PASSWORD__
+#LDAP_USER_TREE_DN=__LDAP_USER_TREE_DN__
+#LDAP_USER_OBJECTCLASS=__LDAP_USER_OBJECTCLASS__
+#LDAP_USER_ID_ATTRIBUTE, LDAP_USER_NAME_ATTRIBUTE and LDAP_USER_PASS_ATTRIBUTE=__LDAP_USER_ID_ATTRIBUTE, LDAP_USER_NAME_ATTRIBUTE and LDAP_USER_PASS_ATTRIBUTE__
+#LDAP_USER_FILTER=__LDAP_USER_FILTER__
+#LDAP_USER_ENABLED_ATTRIBUTE=__LDAP_USER_ENABLED_ATTRIBUTE__
+#LDAP_USER_ENABLED_MASK=__LDAP_USER_ENABLED_MASK__
+#LDAP_USER_ENABLED_DEFAULT=__LDAP_USER_ENABLED_DEFAULT__
+#LDAP_USER_ENABLED_INVERT=__LDAP_USER_ENABLED_INVERT__
+#LDAP_USE_STARTTLS=__LDAP_USE_STARTTLS__
+#LDAP_TLS_REQ_CERT=__LDAP_TLS_REQ_CERT__
+#LDAP_TLS_CACERT_BASE64=__LDAP_TLS_CACERT_BASE64__
+