diff --git a/stdlib/docker/container.cue b/stdlib/docker/container.cue
index 29495ed0..da101a85 100644
--- a/stdlib/docker/container.cue
+++ b/stdlib/docker/container.cue
@@ -28,7 +28,7 @@ import (
 	setup: [...string]
 
 	// Command to execute
-	command: string
+	command: string | *""
 
 	// Environment variables shared by all commands
 	env: [string]: string