diff --git a/.bazelrc.sandboxroot b/.bazelrc.sandboxroot
new file mode 100644
index 0000000..5565210
--- /dev/null
+++ b/.bazelrc.sandboxroot
@@ -0,0 +1,8 @@
+# bazelrc config used during sandboxroot generation
+
+startup --batch_cpu_scheduling --io_nice_level 7
+build --incompatible_strict_action_env=true
+
+# Shared with main .bazelrc
+try-import %workspace%/.bazelrc.user
+try-import %workspace%/ci.bazelrc