remove vllm repository after building image

Signed-off-by: zhihang <[email protected]>

Author: zhihangdeng

tests/llms/test_llms_doc-summarization_vllm.sh

@@ -24,6 +24,7 @@ function build_docker_images() {
     source $(git rev-parse --show-toplevel)/.github/env/_vllm_versions.sh
     git clone --depth 1 -b ${VLLM_VER} --single-branch https://github.com/vllm-project/vllm.git && cd vllm
     docker build --no-cache -f docker/Dockerfile.cpu -t ${REGISTRY:-opea}/vllm:${TAG:-latest} --shm-size=128g .
+    cd .. && rm -rf vllm
     if [ $? -ne 0 ]; then
         echo "opea/vllm built fail"
         exit 1