feat: first pass at registry plugin

plugins/registry/triggers.go

@@ -0,0 +1,21 @@
+package registry
+
+import (
+	"fmt"
+
+	"github.com/dokku/dokku/plugins/common"
+)
+
+// TriggerInstall runs the install step for the registry plugin
+func TriggerInstall() error {
+	if err := common.PropertySetup("registry"); err != nil {
+		return fmt.Errorf("Unable to install the registry plugin: %s", err.Error())
+	}
+
+	return nil
+}
+
+// TriggerPostDelete destroys the registry property for a given app container
+func TriggerPostDelete(appName string) error {
+	return common.PropertyDestroy("registry", appName)
+}