[CI] Spawn docker container with 2Gb shmem

Should prevent crashes during NCCL initialization.

If `data_parallel_tutorial.py` is executed without this option it would segfault in `ncclShmOpen` while executing ` nn.DataParallel(model)`

Author: malfet

.github/workflows/build-tutorials.yml

@@ -87,6 +87,7 @@ jobs:
             --tty \
             --detach \
             --user jenkins \
+            --shm-size=2gb \
             --name="${container_name}" \
             -v "${GITHUB_WORKSPACE}:/var/lib/jenkins/workspace" \
             -w /var/lib/jenkins/workspace \