Reclaim ci runner storage.

Author: jakkra

.github/workflows/zswatch-ci-image.yml

@@ -24,6 +24,14 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Free disk space
+        run: |
+          df -h
+          sudo rm -rf /usr/share/dotnet /opt/ghc /usr/local/lib/android /opt/hostedtoolcache/CodeQL
+          docker system prune -af || true
+          docker volume prune -f || true
+          df -h
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
@@ -44,6 +52,9 @@ jobs:
             ghcr.io/zswatch/ci-base:${{ github.ref_name }}
             ghcr.io/zswatch/ci-base:latest
 
+      - name: Prune buildx cache
+        run: docker buildx prune -af --keep-storage 5GB
+
       - name: Build and push CI image
         uses: docker/build-push-action@v5
         with: