Dockerfile in synvert-1.6.3 vs Dockerfile in synvert-1.6.4

@@ -1,7 +1,9 @@
 FROM ruby:3.3-alpine
 
 RUN apk update && apk add --no-cache git
 
+ADD 'https://www.random.org/cgi-bin/randbyte?nbytes=10&format=h' skipcache
+
 RUN gem install synvert
 
 ENTRYPOINT ["synvert-ruby"]