install rsync on fedora distros

Author: samoht

.travis-docker.sh

@@ -43,6 +43,7 @@ if [ $fork_user != $default_user -o $fork_branch != $default_branch ]; then
 fi
 
 echo ENV OPAMYES=1 >> Dockerfile
+[[ ${DISTRO} = "fedora"* ]] && echo RUN sudo yum install rsync -y >> Dockerfile
 echo RUN opam update -u -y >> Dockerfile
 echo RUN opam depext -ui travis-opam >> Dockerfile
 echo RUN cp '~/.opam/$(opam switch show)/bin/ci-opam' "~/" >> Dockerfile