Modify the docker build stages to better reflect the priority of the elements.

Add a missin nvidia_icd.json file
Remove the config of /tmp/dump

overlay/usr/share/vulkan/icd.d/nvidia_icd.json

@@ -0,0 +1,7 @@
+{
+    "file_format_version" : "1.0.0",
+    "ICD": {
+        "library_path": "libGLX_nvidia.so.0",
+        "api_version" : "1.2.155"
+    }
+}