fix: Add note about original dockerfile

Author: juliusknorr

docker/noop/Dockerfile

@@ -1,11 +1,11 @@
 # VERSION 0.1.0
+# Based on https://github.com/JanNash/docker_noop
 
 FROM alpine:latest AS builder
 COPY noop/noop.c /
 RUN apk add --no-cache gcc musl-dev && gcc -static -o /noop /noop.c
 
 FROM scratch
-MAINTAINER Jan Nash <jnash@jnash.de>
 
 COPY --from=builder /noop /noop
 CMD ["/noop"]