[satlab] Set permission to new Docker socket

BUG=b:216394821

Change-Id: I20a24627bd3d0ceee1c2ee7fdabcac48874b9120
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/satlab/+/3522899
Reviewed-by: Prasad Vuppalapu <prasadv@chromium.org>
Commit-Queue: Anh Le <anhdle@chromium.org>
Tested-by: Anh Le <anhdle@chromium.org>
diff --git a/src/dockerfiles/compose/compose_startup.sh b/src/dockerfiles/compose/compose_startup.sh
index f17304f..ad9d5b3 100644
--- a/src/dockerfiles/compose/compose_startup.sh
+++ b/src/dockerfiles/compose/compose_startup.sh
@@ -72,6 +72,7 @@
     # access to chromeos-test user to access docker.sock in order to launch
     # servod.
     docker exec drone chmod 666 /var/run/docker.sock
+    docker exec drone chmod 666 /var/docker.sock
     # Set permission for device profile created and maintanse by repair
     # tasks.
     docker exec drone chmod 777 /var/servod/profile/