update workflow

.gitea/workflows/flake-check.yml

@@ -5,10 +5,10 @@ jobs:
   flake-check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-    - name: Install dependencies for Nix setup action
-      run: |
-        apt update -y
-        apt install sudo -y                
-    - uses: cachix/install-nix-action@v30
-    - run: export HOME=$(pwd); nix flake check --no-update-lock-file --accept-flake-config .
+      - uses: actions/checkout@v3
+      - name: Check Nix flake inputs
+        uses: DeterminateSystems/flake-checker-action@v4 # This action
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v3
+      - name: Build default package
+        run: nix flake check