dockerfile changes

Author: huangminghuang

.clusterfuzzlite/Dockerfile

@@ -1,9 +1,9 @@
 FROM gcr.io/oss-fuzz-base/base-builder:v1
-RUN apt-get update && apt-get install -y ninja-build curl unzip libtool
-RUN cd /usr/local && \
-    curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v25.6/protoc-25.6-linux-x86_64.zip && \
+RUN apt-get update && apt-get install --no-install-recommends -y ninja-build curl unzip libtool
+WORKDIR /usr/local
+RUN curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v25.6/protoc-25.6-linux-x86_64.zip && \
     unzip protoc-25.6-linux-x86_64.zip && \
     rm protoc-25.6-linux-x86_64.zip 
 COPY . $SRC/hpp-proto
-WORKDIR hpp-proto
+WORKDIR $SRC/hpp-proto
 COPY .clusterfuzzlite/build.sh $SRC/