👍 Add build-hands.yml

.github/workflows/build-hands.yml

@@ -0,0 +1,34 @@
+name: Build Hands
+
+on: [ workflow_dispatch ]
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+    - name: Initialize
+      uses: actions/checkout@v2
+    - name: Cache Bazel
+      uses: actions/cache@v2
+      with:
+        path: ~/.cache/bazel
+        key: ${{ runner.os }}-${{ hashFiles('WORKSPACE') }}
+
+    - name: Build binary
+      run: |
+        pip install numpy
+        bazel build -c opt --define MEDIAPIPE_DISABLE_GPU=1 mediapipe/examples/desktop/hand_tracking:hand_tracking_cpu
+
+    - name: The job has succeeded
+      if: ${{ success() }}
+      uses: actions/upload-artifact@v2
+      with:
+        name: hand_tracking_cpu
+        path: bazel-bin/mediapipe/examples/desktop/hand_tracking/hand_tracking_cpu
+
+    - name: Setup tmate session
+      if: ${{ failure() }}
+      uses: mxschmitt/action-tmate@v3
+      timeout-minutes: 30
+