hadolint: use `COPY` instead of `ADD` for files and folders

utils/docker/Dockerfile

@@ -4,7 +4,7 @@ SHELL ["/bin/bash", "-c"]
 
 ENV DEBIAN_FRONTEND=noninteractive
 
-ADD script.sh /tmp/script.sh
+COPY script.sh /tmp/script.sh
 
 RUN bash -c "/tmp/script.sh"