chore: update Gitea CI/CD workflow to use local caching for Docker builds

.gitea/workflows/build.yml

@@ -19,16 +19,16 @@ jobs:
       - name: 登录到 Gitea Container Registry
         uses: docker/login-action@v3
         with:
-          registry: ${{ env.GITEA_INSTANCE_URL }}
+          registry: ${{ secrets.REGISTRY_ENDPOINT }}
-          username: ${{ env.GITEA_ACTOR }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
       
       - name: 提取 Docker 元数据
         id: meta
         uses: docker/metadata-action@v5
         with:
           images: |
-            ${{ env.GITEA_INSTANCE_URL }}/${{ env.GITEA_REPOSITORY_OWNER }}/litek
+            ${{ secrets.REGISTRY_ENDPOINT }}/${{ github.repository_owner }}/litek
           tags: |
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
@@ -42,7 +42,7 @@ jobs:
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
+          cache-from: type=local,src=/cache
-          cache-to: type=gha,mode=max
+          cache-to: type=local,dest=/cache,mode=max
           platforms: linux/amd64,linux/arm64