Refactoring docker images, updating CUDA to 12.6 and pytorch 2.6

docker/variables.sh

@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 
-export CUDA_VERSION=12.4.1
+export CUDA_VERSION=12.6.0
 export PYTHON_VERSION=3.11.11
 export DEEPSPEED_VERSION=0.16.2
-export ALLTALK_DIR=/opt/alltalk
+export ALLTALK_DIR=/opt/alltalk
+export GITHUB_REPOSITORY=