diff --git a/.github/workflows/test-iso.yml b/.github/workflows/test-iso.yml
index 0371ea7..b4a13c2 100644
--- a/.github/workflows/test-iso.yml
+++ b/.github/workflows/test-iso.yml
@@ -40,10 +40,6 @@ jobs:
             SECURE_BOOT_STRING: ''
 
     steps:
-      - name: setup docker
-        shell: bash
-        run: curl https://files.morgan.kr/public/docker.install | bash -
-        
       - name: Checkout
         uses: actions/checkout@v4