attempt to use buildx cache

.gitea/workflows/build.yaml

@@ -4,6 +4,8 @@ on:
     branches: [ master ]
 jobs:
   docker:
+    env: 
+      RUNNER_TOOL_CACHE: /toolcache
     runs-on: woryzen
     steps:
       -
@@ -27,8 +29,8 @@ jobs:
           platforms: linux/amd64
           push: true
           tags: gitea.woggioni.net/woggioni/jupyter-python:latest
-          # cache-from: type=registry,ref=gitea.woggioni.net/woggioni/jupyter-python:buildcache
-          # cache-to: type=registry,ref=gitea.woggioni.net/woggioni/jupyter-python:buildcache,mode=max
+          cache-from: type=local,src=.cache/buildx
+          cache-to: type=local,dest=.cache/buildx,mode=max
       -
         name: Build and push jupyter-ganymede image
         uses: docker/build-push-action@v5.3.0
@@ -37,3 +39,12 @@ jobs:
           platforms: linux/amd64
           push: true
           tags: gitea.woggioni.net/woggioni/jupyter-ganymede:latest
+          cache-from: type=local,dest=~/.cache/buildx
+          cache-to: type=local,src=~/.cache/buildx,mode=max
+      - name: Cache Buildx cache
+        uses: actions/cache@v4.0.2
+        with:
+          path: ~/.cache/buildx
+          key: ${{ runner.os }}-buildx-${{ hashFiles('**/Dockerfile') }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-