Tried to follow ?prior art? - but first run at it, probably dumb stuff in there, of note:
* Followed "consul" ebuild for template, specifically adds users/openrc init and confd files and logging. Not a systemd fan so please dont ask unless you want to do it yourself..
>>> emerge -aq fabio
[ebuild N ] dev-go/govendor-1.0.9
[ebuild N ] dev-go/vendorfmt-9999
[ebuild N ] net-proxy/fabio-1.5.3
Would you like to merge these packages? [Yes/No] y
>>> Verifying ebuild manifests
>>> Emerging (1 of 3) dev-go/govendor-1.0.9::damo-overlay
>>> Installing (1 of 3) dev-go/govendor-1.0.9::damo-overlay
>>> Emerging (2 of 3) dev-go/vendorfmt-9999::damo-overlay
>>> Installing (2 of 3) dev-go/vendorfmt-9999::damo-overlay
>>> Emerging (3 of 3) net-proxy/fabio-1.5.3::damo-overlay
>>> Installing (3 of 3) net-proxy/fabio-1.5.3::damo-overlay
>>> Recording net-proxy/fabio in "world" favorites file...
>>>