Revert gha cache type to local path type

The gha type is faster, but for some reason the gha cache type is not reliable.
It repeatedly has cache misses when there should be a cache hit.
The local storage cache in combination with achtions/cache doesn't show this behaviour.

Author: larskanis

.github/workflows/ci.yml.erb

@@ -40,15 +40,26 @@ jobs:
           ruby-version: "3.4"
           bundler-cache: true
 
-      - name: Expose GitHub Runtime for docker cache
-        uses: crazy-max/ghaction-github-runtime@v3
+      - name: Fetch docker buildx layer cache
+        uses: actions/cache@v4
+        with:
+          path: tmp/build-cache-${{ runner.arch }}
+          key: ${{ runner.os }}-on-${{ runner.arch }}-<%= job %>-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-on-${{ runner.arch }}-<%= job %>
+            ${{ runner.os }}-on-${{ runner.arch }}-<%= need %>
+          enableCrossOsArchive: true
       - name: Build the image layers <%= job %> on ${{ runner.arch }}
         env:
           RCD_TASK_DEPENDENCIES: "false"
         run: |
           # Change docker to a cache-able driver
           docker buildx create --driver docker-container --use
-          bundle exec rake build:<%= tree_dep %> RCD_DOCKER_BUILD="docker buildx build --cache-from type=gha,scope=${{ runner.os }}-on-${{ runner.arch }}-<%= need %> --cache-from type=gha,scope=${{ runner.os }}-on-${{ runner.arch }}-<%= job %> --cache-to=type=gha,mode=max,scope=${{ runner.os }}-on-${{ runner.arch }}-<%= job %>"
+          bundle exec rake build:<%= tree_dep %> RCD_DOCKER_BUILD="docker buildx build --cache-from=type=local,compression=zstd,src=tmp/build-cache-${{ runner.arch }} --cache-to=type=local,compression=zstd,dest=tmp/build-cache-new"
+      - name: Update and prune docker buildx layer cache
+        run: |
+          rm -rf tmp/build-cache-${{ runner.arch }}
+          mv tmp/build-cache-new tmp/build-cache-${{ runner.arch }}
 <% end %>
 
   build_source_gem:
@@ -128,14 +139,21 @@ jobs:
           ruby-version: "3.3"
           bundler-cache: true
 
-      - name: Expose GitHub Runtime for docker cache
-        uses: crazy-max/ghaction-github-runtime@v3
+      - name: Fetch docker buildx layer cache
+        uses: actions/cache@v4
+        with:
+          path: tmp/build-cache-${{ runner.arch }}
+          key: ${{ runner.os }}-on-${{ runner.arch }}-${{ matrix.platform }}-${{ github.sha }}
+          restore-keys: ${{ runner.os }}-on-${{ runner.arch }}-${{ matrix.platform }}
+          enableCrossOsArchive: true
+
       - name: Build the image from already filled cache
         env:
           RCD_TASK_DEPENDENCIES: "false"
         run: |
           docker buildx create --driver docker-container --use
-          bundle exec rake build:${{ matrix.platform }} RCD_DOCKER_BUILD="docker buildx build --cache-from type=gha,scope=${{ runner.os }}-on-${{ runner.arch }}-${{ matrix.platform }}"
+          bundle exec rake build:${{ matrix.platform }} RCD_DOCKER_BUILD="docker buildx build --cache-from=type=local,compression=zstd,src=tmp/build-cache-${{ runner.arch }}"
+
       - name: Show docker images
         run: docker images