Update ci-testing.yml (#11079)

* Update ci-testing.yml

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Update ci-testing.yml

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Update ci-testing.yml

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Update ci-testing.yml

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Update ci-testing.yml

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

---------

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

.github/workflows/ci-testing.yml

@@ -25,12 +25,16 @@ jobs:
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-      #- name: Cache pip
+      - name: Get cache dir  # https://github.com/actions/cache/blob/master/examples.md#multiple-oss-in-a-workflow
-      #  uses: actions/cache@v3
+        id: pip-cache
-      #  with:
+        run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
-      #    path: ~/.cache/pip
+        shell: bash  # for Windows compatibility
-      #    key: ${{ runner.os }}-Benchmarks-${{ hashFiles('requirements.txt') }}
+      - name: Cache pip
-      #    restore-keys: ${{ runner.os }}-Benchmarks-
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.pip-cache.outputs.dir }}
+          key: ${{ runner.os }}-${{ matrix.python-version }}-pip-${{ hashFiles('requirements.txt') }}
+          restore-keys: ${{ runner.os }}-${{ matrix.python-version }}-pip-
       - name: Install requirements
         run: |
           python -m pip install --upgrade pip wheel