Updated README.md

Author: maeb

README.md

@@ -1,6 +1,6 @@
 # Minimal Godot Engine Docker image
 
-This image is based on a minimal Alpine Linux image that includes glibc. It provides the official Linux server 64-bit 2.1.2-stable build of Godot Engine along with the official templates.
+This image is based on the slim version of the Debian jessie image. It provides the official Linux server 64-bit 2.1.2-stable build of Godot Engine along with the official templates.
 
 The primary application is for automating Godot Engine builds.