diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 97fc930..b230bea 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,20 +21,12 @@ jobs:
           # Set an output parameter `uname` for use in subsequent steps
           run: |
             uname -a
-            
-            #apt-get update
-            #apt install -y docker.io
-            #docker ps
-            #docker run nixos/nix ls -la
             echo ::set-output name=uname::$(uname -a)
-            echo ::set-output name=ls::$(ls -la)
-
       - name: Get the output
         # Echo the `uname` output parameter from the `runcmd` step
         run: |
           echo "The uname output was ${{ steps.runcmd.outputs.uname }}"
-          #apt-get update
-          #apt install -y docker.io
-          #docker ps
-          #docker run nixos/nix ls -la
-          ls -la
+          apt-get update
+          apt install -y docker.io
+          docker ps
+          docker run nixos/nix nix-build '<nixpkgs/nixos>' -A config.system.build.sdImage -I nixos-config=./sd-image.nix