diff --git a/README.md b/README.md
index 6d3c46a..5044d15 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # ServerCtl - Services for Developers
 
+This is a tool to start up servers on-demand for development. **It is not** a
+tool for orchestrating container stacks or deploying sevices for production.
+In many cases the default configuration might be directly insecure, and should
+not be put online. For what it is designed for however, i.e. quickly spinning
+up a ready-to-roll mongodb or openldap server, it does what it is supposed to.
 
 ## Todo
 
@@ -79,3 +84,13 @@ $ ip addr show docker0
     inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
 ...
 ```
+
+### Can I configure the services?
+
+Use the `find` command with the `-E` or `--environment` option to find what you can override
+on start:
+
+```shell
+$ server find mariadb -E
+$ MYSQL_ROOT_PASSWORD=foobar server start mariadb --instance uniqueid
+```
diff --git a/src/Registry/ServiceRegistry.php b/src/Registry/ServiceRegistry.php
index 389cb11..c760390 100644
--- a/src/Registry/ServiceRegistry.php
+++ b/src/Registry/ServiceRegistry.php
@@ -33,6 +33,7 @@ class ServiceRegistry
             if (!fnmatch("*.json", $itempath)) continue;
             $json = file_get_contents($itempath);
             $parsed = json_decode($json, true);
+            if (($parsed['$type']??null) != 'service') continue;
             $this->services[$itempath] = $parsed;
         }
 
@@ -54,4 +55,4 @@ class ServiceRegistry
         return $this->services;
     }
 
-}
\ No newline at end of file
+}