chore: add build action [skip-build]

.github/actionlint.yaml

@@ -0,0 +1,3 @@
+self-hosted-runner:
+  labels:
+    - docker-builder-01

.github/workflows/build-and-commit.yml

@@ -0,0 +1,85 @@
+name: Nix build and commit
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  check-commit:
+    runs-on: ubuntu-latest
+    outputs:
+      skip: ${{ steps.check.outputs.skip }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - id: check
+        run: |
+          if [ "${{ github.event_name }}" = "pull_request" ]; then
+            msg=$(git log -1 --pretty=%B "${{ github.event.pull_request.head.sha }}")
+          else
+            msg="manual dispatch"
+          fi
+          echo "Commit message: $msg"
+          if echo "$msg" | grep -q '\[skip-build\]'; then
+            echo "skip=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "skip=false" >> "$GITHUB_OUTPUT"
+          fi
+
+  build_and_commit:
+    needs: check-commit
+    if: needs.check-commit.outputs.skip == 'false'
+    runs-on: docker-builder-01
+    steps:
+      - name: Show disk usage
+        run: df -h
+
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          lfs: true
+          ref: ${{ github.head_ref || github.ref }}
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@v31
+
+      - name: Setup huggingface cachix
+        uses: cachix/cachix-action@v15
+        with:
+          name: huggingface
+
+      - name: Clean build directory
+        run: |
+          rm -rf build
+
+      - name: Build with Nix
+        run: |
+            nix run .#build-and-copy \
+                --override-input kernel-builder github:huggingface/kernel-builder \
+                --max-jobs 8 \
+                -j 8 \
+                -L
+
+      - name: List built binaries
+        run: |
+          ls build
+
+      - name: Commit build artifact
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add build/*
+          git commit -m "Add built binary [skip-build]"
+
+      - name: Push changes
+        run: |
+          git push origin HEAD:"$HEAD_REF"
+        env:
+          HEAD_REF: ${{ github.head_ref || github.ref }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}