Arvados

CentOS 7: old bash version doesn't support local -n. https://github.com/tokiwinter/cloudns-api/issues/8

We need to upgrade bash in the centos7 package build/test image to version 4.3 or later to support namerefs.

Specifically, add bash 4.3 or later installation to these Dockerfiles:

build/package-build-dockerfiles/centos7/Dockerfile
build/package-test-dockerfiles/centos7/Dockerfile

and that will resolve the problem. Make sure that the /bin/bash executable is updated to point at the new version of bash.

if there are not suitable RPMs, worst case scenario:

https://github.com/tokiwinter/cloudns-api/issues/8#issuecomment-351304442