Updated accessory proxy to support hosts option

lib/kamal/configuration/docs/accessory.yml

@@ -101,14 +101,19 @@ accessories:
     # Proxy
     #
     proxy:
-      # Host
+      # Hosts
       #
       # The hosts that will be used to serve the app. The proxy will only route requests
       # to this host to your app.
       #
       # If no hosts are set, then all requests will be forwarded, except for matching
       # requests for other apps deployed on that server that do have a host set.
+      #
+      # Specify one of `host` or `hosts`.
       host: foo.example.com
+      hosts:
+        - foo.example.com
+        - bar.example.com
 
       # App port
       #

test/commands/accessory_test.rb

@@ -171,7 +171,7 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
 
   test "deploy" do
     assert_equal \
-      "docker exec kamal-proxy kamal-proxy deploy custom-busybox --target \"172.1.0.2:80\" --host \"busybox.example.com\" --deploy-timeout \"30s\" --drain-timeout \"30s\" --buffer-requests --buffer-responses --log-request-header \"Cache-Control\" --log-request-header \"Last-Modified\" --log-request-header \"User-Agent\"",
+      "docker exec kamal-proxy kamal-proxy deploy custom-busybox --target=\"172.1.0.2:80\" --host=\"busybox.example.com\" --deploy-timeout=\"30s\" --drain-timeout=\"30s\" --buffer-requests --buffer-responses --log-request-header=\"Cache-Control\" --log-request-header=\"Last-Modified\" --log-request-header=\"User-Agent\"",
       new_command(:busybox).deploy(target: "172.1.0.2").join(" ")
   end
 

test/configuration/accessory_test.rb

@@ -167,6 +167,6 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
 
   test "proxy" do
     assert @config.accessory(:monitoring).running_proxy?
-    assert_equal "monitoring.example.com", @config.accessory(:monitoring).proxy.host
+    assert_equal [ "monitoring.example.com" ], @config.accessory(:monitoring).proxy.hosts
   end
 end