fix: allow configurations without web roles

test/cli/healthcheck_test.rb

@@ -64,9 +64,14 @@ class CliHealthcheckTest < CliTestCase
     end
     assert_match "container not ready (unhealthy)", exception.message
   end
+  
+  test "does not perform if primary does not have traefik" do
+    SSHKit::Backend::Abstract.any_instance.expects(:execute).never
+    run_command("perform", config_file: "test/fixtures/deploy_workers_only.yml")
+  end
 
   private
-    def run_command(*command)
-      stdouted { Kamal::Cli::Healthcheck.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    def run_command(*command, config_file: "test/fixtures/deploy_with_accessories.yml")
+      stdouted { Kamal::Cli::Healthcheck.start([*command, "-c", config_file]) } 
     end
 end

test/configuration_test.rb

@@ -58,9 +58,9 @@ class ConfigurationTest < ActiveSupport::TestCase
     assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3" ], @config_with_roles.all_hosts
   end
 
-  test "primary web host" do
-    assert_equal "1.1.1.1", @config.primary_web_host
-    assert_equal "1.1.1.1", @config_with_roles.primary_web_host
+  test "primary host" do
+    assert_equal "1.1.1.1", @config.primary_host
+    assert_equal "1.1.1.1", @config_with_roles.primary_host
   end
 
   test "traefik hosts" do

test/fixtures/deploy_workers_only.yml

@@ -0,0 +1,10 @@
+service: app
+image: dhh/app
+servers:
+  workers:
+    hosts:
+      - 1.1.1.1
+      - 1.1.1.2
+registry:
+  username: user
+  password: pw