add buildx and change caching around

.forgejo/workflows/devel.yml

@@ -8,7 +8,7 @@ jobs:
     container:
       image: node:21-alpine
     steps:
-    - name: setup job
+    - name: setup workspace
       run: |
         apk add --no-cache libc6-compat git zstd docker docker-cli
         apk update
@@ -16,16 +16,20 @@ jobs:
         yarn config set nodeLinker node-modules
     - name: checkout
       uses: https://code.forgejo.org/actions/checkout@v4
-    - name: cache turbo build
+    - name: cache
       uses: https://code.forgejo.org/actions/cache@v4
       with: 
-        path: .turbo
+        path: |
+          .yarn
+          node_modules
         key: ${{ runner.os }}-turbo-${{ github.sha }}
         restore-keys: |
           ${{ runner.os }}-turbo-
           ${{ runner.os }}-
     - name: yarn install
       run: yarn install
+    - name: Docker Buildx
+      uses: https://code.forgejo.org/docker/setup-buildx-action@v3
     - name: Login to Docker Registry
       uses: https://code.forgejo.org/docker/login-action@v3
       with: