add caching

.github/workflows/ci.yml

@@ -11,10 +11,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Cache Docker layers
+        uses: actions/cache@v3
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
       - name: Build the Docker image
         run: |
           docker buildx create --use
-
           docker buildx build \
             --tag unicef/hope_country_workspace:${{ github.sha }} \
             --load \
@@ -23,4 +29,4 @@ jobs:
             ./
       - name: Run the tests
         run: |
-          docker compose -f ./.github/docker/compose.ci.yml up --exit-code-from tests
+          image=unicef/hope_country_workspace:${{ github.sha }} docker compose -f ./.github/docker/compose.ci.yml up --exit-code-from tests