Github user kevdoran commented on the issue:
https://github.com/apache/nifi-registry/pull/102
Hi @NKame, thanks for the contribution. It seems the issue is the use of
the [`source` function on line
88](https://github.com/apache/nifi-registry/blob/rel/nifi-registry-0.1.0/nifi-registry-resources/src/main/resources/bin/nifi-registry.sh#L88),
which is a `bash` builtin.
While changing the shebang line to specify bash would fix this issue, I
think we could also modify the script to remove any bash builtins and maintain
sh/posix compatibility.
Could you try replacing line 88 in the script with this and see if that
fixes the issue on your platform:
. /etc/os-release
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