Update docker push tests

Signed-off-by: Tom Chauveau <tom.chauveau@epitech.eu>

stdlib/docker/tests/push/push.cue

@@ -1,37 +1,13 @@
 package docker
 
 import (
-	"alpha.dagger.io/dagger/op"
 	"alpha.dagger.io/dagger"
-	"alpha.dagger.io/alpine"
 	"alpha.dagger.io/random"
 )
 
 TestRegistry: {
-	username: string         @dagger(input)
-	secret:   dagger.#Secret @dagger(input)
-}
-
-#TestGetSecret: {
-	secret: dagger.#Artifact
-
-	out: {
-		string
-
-		#up: [
-			op.#Load & {from: alpine.#Image},
-
-			op.#Exec & {
-				always: true
-				args: ["sh", "-c", "cp /input/secret /secret"]
-				mount: "/input/secret": "secret": secret
-			},
-
-			op.#Export & {
-				source: "/secret"
-			},
-		]
-	}
+	username: dagger.#Input & {string}
+	secret:   dagger.#Input & {dagger.#Secret}
 }
 
 TestPush: {
@@ -41,10 +17,6 @@ TestPush: {
 
 	target: "daggerio/ci-test:\(tag.out)"
 
-	secret: #TestGetSecret & {
-		secret: TestRegistry.secret
-	}
-
 	image: #ImageFromDockerfile & {
 		dockerfile: """
 				FROM alpine
@@ -58,7 +30,7 @@ TestPush: {
 		source:   image
 		auth: {
 			username: TestRegistry.username
-			"secret": secret.out
+			secret:   TestRegistry.secret
 		}
 	}
 }