diff --git a/.DEBIAN/env.default b/.DEBIAN/env.default
index 0bb6549..0ea58ae 100644
--- a/.DEBIAN/env.default
+++ b/.DEBIAN/env.default
@@ -1,6 +1,9 @@
 # Toggle debug mode
 #DEBUG=false
 
+# Cert Path
+CERT_PATH="/etc/fastapi-dls/cert"
+
 # Where the client can find the DLS server
 DLS_URL=127.0.0.1
 DLS_PORT=443
diff --git a/.DEBIAN/postinst b/.DEBIAN/postinst
index 35c33fb..6427193 100644
--- a/.DEBIAN/postinst
+++ b/.DEBIAN/postinst
@@ -3,6 +3,8 @@
 WORKING_DIR=/usr/share/fastapi-dls
 CONFIG_DIR=/etc/fastapi-dls
 
+source $CONFIG_DIR/env
+
 while true; do
   [ -f $CONFIG_DIR/webserver.key ] && default_answer="N" || default_answer="Y"
   [ $default_answer == "Y" ] && V="Y/n" || V="y/N"
@@ -25,27 +27,32 @@ if [ -f $CONFIG_DIR/webserver.key ]; then
 
   if [ -x "$(command -v curl)" ]; then
     echo "> Testing API ..."
-    source $CONFIG_DIR/env
     curl --insecure -X GET https://$DLS_URL:$DLS_PORT/-/health
   else
     echo "> Testing API failed, curl not available. Please test manually!"
   fi
 fi
 
+echo "> Create Certificate-Chain folder ..."
+mkdir -p $CERT_PATH
+
+echo "> Set permissions ..."
 chown -R www-data:www-data $CONFIG_DIR
 chown -R www-data:www-data $WORKING_DIR
 
+echo "> Done."
+
 cat <<EOF
 
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 #                                                                             #
 #    fastapi-dls is now installed.                                            #
 #                                                                             #
-#    Service should be up and running.                                        #
-#      Webservice is listen to https://localhost                              #
-#                                                                             #
-#    Configuration is stored in /etc/fastapi-dls/env.                         #
+#    Service should be up and running (if you choose to auto-generate         #
+#     self-signed webserver certificate).                                     #
 #                                                                             #
+#    - Webservice is listen to https://localhost                              #                                                                       #
+#    - Configuration is stored in /etc/fastapi-dls/env                        #
 #                                                                             #
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #