ci: add docker caching layer

Author: skunxicat

.github/workflows/release.yml

@@ -30,13 +30,37 @@ jobs:
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+      - name: Cache Docker layers
+        uses: actions/cache@v3
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
       - name: Build Docker images
         run: |
           echo "${{ secrets.GHCR_PAT }}" > github_token
           export DOCKER_BUILDKIT=1
-          docker buildx build --builder default --platform linux/arm64 --output type=docker --progress=plain --secret id=github_token,src=github_token -t lambda-shell-runtime:tiny -f tiny.Dockerfile .
-          docker buildx build --builder default --platform linux/arm64 --output type=docker --progress=plain --secret id=github_token,src=github_token -t lambda-shell-runtime:micro -f micro.Dockerfile .
-          docker buildx build --builder default --platform linux/arm64 --output type=docker --progress=plain --secret id=github_token,src=github_token -t lambda-shell-runtime:full -f Dockerfile .
+          docker buildx build --builder default --platform linux/arm64 \
+            --output type=docker --progress=plain \
+            --secret id=github_token,src=github_token \
+            --cache-from type=local,src=/tmp/.buildx-cache \
+            --cache-to type=local,dest=/tmp/.buildx-cache \
+            -t lambda-shell-runtime:tiny -f tiny.Dockerfile .
+
+          docker buildx build --builder default --platform linux/arm64 \
+            --output type=docker --progress=plain \
+            --secret id=github_token,src=github_token \
+            --cache-from type=local,src=/tmp/.buildx-cache \
+            --cache-to type=local,dest=/tmp/.buildx-cache \
+            -t lambda-shell-runtime:micro -f micro.Dockerfile .
+
+          docker buildx build --builder default --platform linux/arm64 \
+            --output type=docker --progress=plain \
+            --secret id=github_token,src=github_token \
+            --cache-from type=local,src=/tmp/.buildx-cache \
+            --cache-to type=local,dest=/tmp/.buildx-cache \
+            -t lambda-shell-runtime:full -f Dockerfile .
         shell: bash
       - name: Log in to GHCR
         run: echo "${{ secrets.GHCR_PAT }}" | docker login ghcr.io -u skunxicat --password-stdin