Support .consul in go-dnsmasq stubzones

[matthewvalimaki]

Related to #24.

Could we add stubzones support in alpine-consul?
According to https://github.com/janeczku/go-dnsmasq Use different nameservers for specific domains domain[,domain]/host[:port] so I'm thinking the following might work for https://github.com/smebberson/docker-alpine/blob/master/alpine-base/root/etc/services.d/resolver/run:

exec go-dnsmasq --default-resolver --append-search-domains --hostsfile=/etc/hosts --stubzones=.consul/127.0.0.1:8600 >> $GO_DNSMASQ_LOG_FILE 2>&1

[smebberson]

@matthewvalimaki, yeah this looks good. I'm half way through approving and checking #13, post that, we can integrate this for sure. Nice and simple ;)

[matthewvalimaki]

Sweet. I have not looked into this but there was significant delay with
response when consul was only nameserver. Perhaps I missed an option,
perhaps newer consul doesn't experience that. Something to test :)
On Mar 17, 2016 3:55 PM, "Scott Mebberson" notifications@github.com wrote:

@matthewvalimaki https://github.com/matthewvalimaki, yeah this looks
good. I'm half way through approving and checking #13
#13, post that, we can
integrate this for sure. Nice and simple ;)

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#31 (comment)

[matthewvalimaki]

Actually I propose we'll introduce ENV CONSUL_DOMAIN=consul to alpine-base which then is used with go-dnsmasq --stubzones=$CONSUL_DOMAIN/127.0.0.1:8600 and consul -domain $CONSUL_DOMAIN. That way it's easy to change it if necessary and no need to write over default /etc/services.d/consul/run.

[smebberson]

@matthewvalimaki, sounds good. I really like that refinement. If you want to implement in PR #34, I'll merge straight away :)

[matthewvalimaki]

@smebberson done. I also updated the ENV styling a bit to be more readable. I also updated go-dnsmasq version to latest while I was touching that spot.

So with this configuration we still default to consul domain and all should work as they used to. But if you want/need to change the domain all one needs to do is re-declare ENV CONSUL_DOMAIN=<my domain>.