[nix-packs] fix missing arg

Author: tsirysndr

.github/workflows/nixpacks.yml

@@ -19,7 +19,7 @@ jobs:
           dagger functions
           dagger call plan --src . --path example/samples/php-api --output=./plan.json
           jq . < ./plan.json
-          dagger call build --src . --path example/samples/php-api
+          dagger call build --src . --path example/samples/php-api --name php-api
         working-directory: nixpacks
   publish:
     needs: test

nixpacks/src/dagger/jobs.ts

@@ -40,7 +40,8 @@ export async function build(
     .withWorkdir("/app")
     .withServiceBinding("dockerd", docker("25.0.3", true))
     .withEnvVariable("DOCKER_HOST", "tcp://dockerd:2375")
-    .withExec(["nixpacks", "build", path, "--name", name]);
+    .withExec(["nixpacks", "build", path, "--name", name])
+    .withExec(["docker", "images"]);
   return ctr.stdout();
 }