Formatting

Author: stewartboogert

README.md

@@ -3,12 +3,17 @@
 Docker build and test environments for BDSIM
 
 ## Builds
+  * Operating systems
+    * Ubuntu20, 22, 24, centos8, alma9 
   * Geant4
-    * v10.7.4
-    * v11.0
-    * v11.1
-    * v11.2
+    * v10.7.4 
+    * v11.0 
+    * v11.1 
+    * v11.2 
 
+## ROOT vertsions
+
+## CLHEP versions
 
 ## Usage
   * Update `.github/workflows/main.yaml` and or `dockerfiles`