extend pytest-sdist timeout to 30 min for slow/flaky tests (#3456) [skip ci]

* extend pytest-sdist timeout to 30 min for slow/flaky tests

* Also preload the cdn cache so it doesn't get stampeded

* fix yaml syntax

* missing fields

* can't pipe to dev/null

* Fix nightlies and add 2.10.0 to multi-gpu suite

.github/workflows/multi-gpu-e2e.yml

@@ -35,12 +35,6 @@ jobs:
             pytorch: 2.8.0
             axolotl_extras: fbgemm-gpu
             num_gpus: 2
-          - cuda: 128
-            cuda_version: 12.8.1
-            python_version: "3.11"
-            pytorch: 2.9.1
-            axolotl_extras: "fbgemm-gpu"
-            num_gpus: 2
           - cuda: 129
             cuda_version: 12.9.1
             python_version: "3.12"
@@ -55,6 +49,13 @@ jobs:
             axolotl_extras:
 #            axolotl_extras: fbgemm-gpu
             num_gpus: 2
+          - cuda: 128
+            cuda_version: 12.8.1
+            python_version: "3.11"
+            pytorch: 2.10.0
+            axolotl_extras: "fbgemm-gpu"
+            num_gpus: 2
+            dockerfile: "Dockerfile-uv.jinja"
     runs-on: [self-hosted, modal]
     timeout-minutes: 120
     steps: