Create build-iso

.github/workflows/build-iso

@@ -0,0 +1,50 @@
+name: Build NixOS iso from flake
+
+on:
+  schedule:
+    cron: "0 10 * * 2"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target: [
+          live-gnome-unstable
+        ]
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Cache date
+        run: echo "DATE=$(date +'%Y-%m-%d %H:%M:%S')" >> $GITHUB_ENV
+
+      - name: Filename friendly date
+        run: echo "BUILD_DATE=$(echo $DATE | sed -r -e 's/:/./g' -e 's/ /_/g')" >> $GITHUB_ENV
+
+      - name: Store branch name
+        run: echo "BUILD_BRANCH=${GITHUB_REF##*/}" >> $GITHUB_ENV
+
+      - name: Store commit hash
+        run: echo "BUILD_COMMIT=$(git rev-parse --short $GITHUB_SHA)" >> $GITHUB_ENV
+
+      - name: Generate output name
+        run: echo "NAME=${BUILD_DATE}_${BUILD_BRANCH}_${BUILD_COMMIT}_nixos_iso_${{ matrix.target }}" >> $GITHUB_ENV
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@v20
+
+      - name: BuiCheck flake
+        uses: workflow/nix-shell-action@v3.2.1
+        with:
+          script: nix flake check .
+
+      - name: Build image
+        uses: workflow/nix-shell-action@v3.2.1
+        with:
+          script: nix build .#${{ matrix.target }}
+
+      - name: Upload iso
+        uses: actions/upload-artifact@v3.1.2
+        with:
+          name: ${{ env.NAME }}
+          path: result/iso/*.iso