diff --git a/plugins/wasm-rust/Dockerfile b/plugins/wasm-rust/Dockerfile
index b2c6725b14..ffdea8c537 100644
--- a/plugins/wasm-rust/Dockerfile
+++ b/plugins/wasm-rust/Dockerfile
@@ -3,10 +3,10 @@ WORKDIR /workspace
 RUN rustup target add wasm32-wasip1
 ARG PLUGIN_NAME="say-hello"
 ARG BUILD_OPTS="--release"
-ARG BUILDRC=".buildrc"
+ARG PREBUILD=".prebuild"
 COPY . .
 WORKDIR /workspace/extensions/$PLUGIN_NAME
-RUN if [ -f $BUILDRC ]; then sh $BUILDRC; fi
+RUN if [ -f $PREBUILD ]; then sh $PREBUILD; fi
 RUN cargo build --target wasm32-wasip1 $BUILD_OPTS \
     && cp target/wasm32-wasip1/release/*.wasm /main.wasm