try: github cache to enable cross-build caching

actions/serverless_prod_deploy/action.yml

@@ -32,6 +32,13 @@ runs:
       shell: bash
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v1
+    - name: Cache Docker layers
+      uses: actions/cache@v3
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
     - name: Copy user code template file
       uses: dagster-io/dagster-cloud-action/actions/utils/copy_template@yuhan/08-07-use_--mount_type_cache_to_explicitly_cache_pip_downloads
       with:
@@ -45,8 +52,12 @@ runs:
         tags: "${{ env.REGISTRY_URL }}:${{ github.sha }}"
         labels: |
           branch=${{ github.head_ref }}
-        cache-from: type=gha
-        cache-to: type=gha,mode=max
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
+    - name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
     - name: Deploy to Dagster Cloud
       uses: dagster-io/dagster-cloud-action/actions/utils/deploy@main
       id: deploy

src/Dockerfile.template

@@ -7,7 +7,7 @@ WORKDIR /opt/dagster/app
 COPY . /opt/dagster/app
 
 # Create caches for pip installs
-RUN --mount=type=cache,target=/root/.cache/pip if [ -f "requirements.txt" ]; then \
+RUN --mount=type=cache,target=/tmp/.buildx-cache/.cache/pip if [ -f "requirements.txt" ]; then \
         pip install -r requirements.txt; \
     else \
         pip install .; \