diff --git a/README.md b/README.md
index 0fb5bcc..c0e6b36 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,16 @@
+#### Environment Variables
+
+##### Guest user
+Environment variable | Default value
+--- | --- 
+SYBASE_USER | guest 
+SYBASE_PASSWORD | guest1234 
+SYBASE_DB | guest
+
+##### Admin user
+Environment variable | Default value
+--- | --- 
+SYBASE_USER | sa
+SYBASE_PASSWORD | password
+
 See more about this image at [Docker Hub](https://hub.docker.com/r/jaschweder/sybase)