diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 00000000000000..cee68b4eeaa7b7
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,63 @@
+name: Build
+
+on: [push, pull_request]
+
+# Cancel in-progress runs for the same branch/PR to avoid wasting resources.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: build (ubuntu-latest)
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    env:
+      CCACHE_DIR: ${{ github.workspace }}/.ccache
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Install dependencies
+      run: |
+        sudo apt-get -q update
+        sudo apt-get -q -y install \
+          make gcc ccache libssl-dev libcurl4-openssl-dev libexpat-dev \
+          zlib1g-dev gettext libpcre2-dev
+
+    - name: Restore build cache
+      uses: actions/cache@v4
+      with:
+        path: ${{ env.CCACHE_DIR }}
+        key: ccache-build-${{ github.ref_name }}-${{ github.run_id }}
+        restore-keys: |
+          ccache-build-${{ github.ref_name }}-
+          ccache-build-
+
+    - name: Build
+      run: |
+        export PATH="/usr/lib/ccache:$PATH"
+        ccache --zero-stats
+        make
+        ccache --show-stats
+
+    - name: Smoke test
+      run: |
+        ./git --version
+        ./git init --bare /tmp/smoke-test-repo
+
+    - name: Run tests
+      run: |
+        export PATH="/usr/lib/ccache:$PATH"
+        make test
+
+    - name: Print test failures
+      if: failure()
+      run: ci/print-test-failures.sh
+
+    - name: Upload failed tests' directories
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+      uses: actions/upload-artifact@v5
+      with:
+        name: failed-tests
+        path: ${{ env.FAILED_TEST_ARTIFACTS }}