grpc-js-xds: Use distroless Node image for interop Dockerfile

Author: murgatroid99

packages/grpc-js-xds/interop/Dockerfile

@@ -27,7 +27,7 @@ RUN npm install
 WORKDIR /node/src/grpc-node/packages/grpc-js-xds
 RUN npm install
 
-FROM node:18-slim
+FROM gcr.io/distroless/nodejs18-debian11:latest
 WORKDIR /node/src/grpc-node
 COPY --from=build /node/src/grpc-node/packages/grpc-js ./packages/grpc-js/
 COPY --from=build /node/src/grpc-node/packages/grpc-js-xds ./packages/grpc-js-xds/