Merge pull request #620 from mlitwiniuk/allow_custom_ports_for_ssh

Allow custom user and port for builder host

lib/kamal/cli/build.rb

@@ -127,8 +127,11 @@ class Kamal::Cli::Build < Kamal::Cli::Base
     def connect_to_remote_host(remote_host)
       remote_uri = URI.parse(remote_host)
       if remote_uri.scheme == "ssh"
-        options = { user: remote_uri.user, port: remote_uri.port }.compact
-        on(remote_uri.host, options) do
+        host = SSHKit::Host.new(
+          hostname: remote_uri.host,
+          ssh_options: { user: remote_uri.user, port: remote_uri.port }.compact
+        )
+        on(host, options) do
           execute "true"
         end
       end