fix: bail if --chaos and specific version

See coop-cloud/organising#503.

cli/app/deploy.go

@@ -51,6 +51,11 @@ recipes.
 		app := internal.ValidateApp(c)
 		stackName := app.StackName()
 
+		specificVersion := c.Args().Get(1)
+		if specificVersion != "" && internal.Chaos {
+			logrus.Fatal("cannot use <version> and --chaos together")
+		}
+
 		if err := recipe.EnsureExists(app.Recipe); err != nil {
 			logrus.Fatal(err)
 		}
@@ -112,7 +117,6 @@ recipes.
 		}
 
 		version := deployedVersion
-		specificVersion := c.Args().Get(1)
 		if specificVersion != "" {
 			version = specificVersion
 			logrus.Debugf("choosing %s as version to deploy", version)