Using capistrano 3.8.2, I monkeypatched lib/capistrano/dsl/paths.rb in my deploy.rb, but then I found that I needed more work to get git wrapper set up right when there where different deploy users.
The result is at: https://gist.github.com/mcr/49e8c7034658120013c1fe49da77c2ac
But, I'm leaving the essence of the content here:
module Capistrano
module DSL
module Paths
def deploy_to
dir = @host.properties.fetch(:deploy_to) || fetch(:deploy_to)
puts "For #{@host.hostname} deploy_to: #{dir}"
dir
end
end
end
end
(You can take the puts out, and shorten it to a one-liner, but I found the extra debug useful)
One then does:
server "server.client1.example.com", user: "client1", roles: %w{app db web}, deploy_to: '/client1/app/foobar'
server "server.client2.example.com", user: "client2", roles: %w{app db web}, deploy_to: '/client2/app/foobar'
where server.client1.example.com and server.client2.example.com are CNAMEs or duplicate A/AAAA records for the same server. This also isolates the question of where each client is to DNS.