diff --git a/ci/travis/ci.sh b/ci/travis/ci.sh
index 075015f23..ae9a1966a 100755
--- a/ci/travis/ci.sh
+++ b/ci/travis/ci.sh
@@ -314,13 +314,22 @@ build_wheels() {
         -e "CI=${CI}"
         -e "RAY_INSTALL_JAVA=${RAY_INSTALL_JAVA:-}"
         -e "BUILDKITE=${BUILDKITE:-}"
-        -e "BUILDKITE_BAZEL_CACHE_URL=$=${BUILDKITE_BAZEL_CACHE_URL=$:-}"
+        -e "BUILDKITE_BAZEL_CACHE_URL=${BUILDKITE_BAZEL_CACHE_URL:-}"
       )
 
-      # This command should be kept in sync with ray/python/README-building-wheels.md,
-      # except the "${MOUNT_BAZEL_CACHE[@]}" part.
-      docker run --rm -w /ray -v "${PWD}":/ray "${MOUNT_BAZEL_CACHE[@]}" \
-      quay.io/pypa/manylinux2014_x86_64 /ray/python/build-wheel-manylinux2014.sh
+
+      if [ -z "${BUILDKITE-}" ]; then
+        # This command should be kept in sync with ray/python/README-building-wheels.md,
+        # except the "${MOUNT_BAZEL_CACHE[@]}" part.
+        docker run --rm -w /ray -v "${PWD}":/ray "${MOUNT_BAZEL_CACHE[@]}" \
+        quay.io/pypa/manylinux2014_x86_64 /ray/python/build-wheel-manylinux2014.sh
+      else
+        cp -R /ray /ray-mount # copy repo files to the shared mount dir
+        docker run --rm -w /ray -v /ray-mount:/ray "${MOUNT_BAZEL_CACHE[@]}" \
+          quay.io/pypa/manylinux2014_x86_64 /ray/python/build-wheel-manylinux2014.sh
+        cp -R /ray-mount /ray # copy new files back here
+        find . | grep whl # testing
+      fi
       ;;
     darwin*)
       # This command should be kept in sync with ray/python/README-building-wheels.md.