Merge pull request #1448 from helderco/fix-docker-push-auth

Fix missing auth in docker.#Push

pkg/universe.dagger.io/docker/push.cue

@@ -25,6 +25,10 @@ import (
 
 	_push: engine.#Push & {
 		"dest": dest
+		"auth": [ for target, creds in auth {
+			"target": target
+			creds
+		}]
 		input:  image.rootfs
 		config: image.config
 	}