I've prepared a Dockerfile that produces a canned Perl 5.8.8 environment based on CentOS 5 on any host with Docker. It has ccache installed and enabled, git installed, IPC::Run installed, all the mess required to make CPAN work sensibly done, etc.
That one didn't include a new enough flex or bison, so it couldn't rebuild a fully clean tree that hadn't been built on the host first.
Fixed in the attached along with some other cleanups.
I'm not proposing to commit this of course, though I'll probably stash it on github and link to it in the wiki. I just think it'll be a useful tool for those of us doing TAP framework stuff - and anyone writing tests, since those too will have to work with $ancientperl. (Yes, I stand by "ancient" - CentOS 5, Debian Etch? Ancient.)
