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-rwxr-xr-xtools/dockerfile/interoptest/grpc_interop_cxx/build_interop.sh6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/dockerfile/interoptest/grpc_interop_cxx/build_interop.sh b/tools/dockerfile/interoptest/grpc_interop_cxx/build_interop.sh
index 1c0828d23a..7a7ca0d3d1 100755
--- a/tools/dockerfile/interoptest/grpc_interop_cxx/build_interop.sh
+++ b/tools/dockerfile/interoptest/grpc_interop_cxx/build_interop.sh
@@ -32,7 +32,11 @@
set -e
mkdir -p /var/local/git
-git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
+git clone /var/local/jenkins/grpc /var/local/git/grpc
+# clone gRPC submodules, use data from locally cloned submodules where possible
+(cd /var/local/jenkins/grpc/ && git submodule foreach 'cd /var/local/git/grpc \
+&& git submodule update --init --reference /var/local/jenkins/grpc/${name} \
+${name}')
# copy service account keys if available
cp -r /var/local/jenkins/service_account $HOME || true