Add CI pipeline

.github/workflows/ci.yml

@@ -0,0 +1,35 @@
+name: CI
+
+on:
+  push:
+
+#env:
+#  ATTIC_AUTH_TOKEN: ${{ secrets.ATTIC_AUTH_TOKEN }}
+
+jobs:
+  build:
+    runs-on: nix
+    steps:
+      - name: Initialize CI
+        uses: https://git.qo.is/qo.is/actions-nix-init@main
+        with:
+          token: ${{ secrets.CI_TOKEN }}
+          lfs: false
+
+      #- name: Add submodules to nix store to circumvent another nix bug
+      #  run: |
+      #    git clone https://git.qo.is/qo.is/infrastructure-private.git /tmp/private
+      #    cd /tmp/private
+      #    nix flake prefetch
+
+      #- name: Use attic cache
+      #  run: nix run .#cache use
+
+      - name: Build
+        run: |
+          nix build --max-jobs 12 --cores 12
+          #nix run .#cache push
+
+      - name: Run Checks
+        run: nix flake check
+