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+++ b/README.md
@@ -13,14 +13,15 @@ Original Paper:
 - apptainer
 
 
-Tested Environment:
-
 ## Containers
 This project uses [apptainer](https://apptainer.org/docs/user/main/introduction.html) as the main container engine. Basic commands are:
 
     apptainer build target.sif definiton.def 
 
-    apptainer run target.sif
+See Apptainer documentation for more details. There are three containers currently provided:
+- basic_image: This is the last available official build of tensorflow 1.14 without gpu support. 
+- basic_image_gpu: This is the last available official build of tensorflow 1.14 *with* gpu support.
+- **nvidia_image_gpu** (use this one): This is the latest build of the nvidia tensorflow 1.x project. Provides modern gpu support for tensorflow 1.15
 
 See documentation for more details. There are three containers currently provided:
 - [basic_image](basic_image.def): This is the last available official build of tensorflow 1.14 without gpu support.