save/restore cache

Signed-off-by: bakhtin <[email protected]>

Author: bakhtin

.github/workflows/release.yml

@@ -10,25 +10,37 @@ jobs:
     runs-on: warp-ubuntu-latest-x64-32x
     steps:
       - uses: actions/checkout@v5
-      - name: Cache dependencies
-        id: cache
-        uses: actions/cache@v4
+
+      - name: Restore cache
+        id: restore-cache
+        uses: actions/cache/restore@v4
         with:
           path: |
-            **/mkosi.builddir/
-            **/mkosi.cache/
-            **/mkosi.tools/
-          key: mkosi-buildernet-${{ github.run_id }}
-          restore-keys: |
-            mkosi-buildernet-
+            cache.tar
+          key: mkosi-buildernet-
+
       - name: Install mkosi
         run: |
           sudo apt-get update && sudo apt-get install -y debian-archive-keyring
           sudo -H pip3 install git+https://github.com/systemd/mkosi.git@$(cat .mkosi_version)
+
+      - name: Extract cache
+        if: steps.restore-cache.outputs.cache-hit == 'true'
+        run: |
+          sudo tar -xf cache.tar
+          sudo rm -f cache.tar
+
       - name: Build image
         run: |
           sudo mkosi --force -I buildernet.conf --profile=devtools,gcp,local,cloud
+
       - name: Prepare cache
         run: |
-          USER="$(id -u):$(id -g)"
-          sudo find . \( -name "mkosi.builddir" -o -name "mkosi.cache" -o -name "mkosi.tools" \) -type d 2>/dev/null -exec sudo chown -R "$USER" {} \+ || true
+          sudo find . \( -name "mkosi.builddir" -o -name "mkosi.cache" -o -name "mkosi.tools" \) -type d -print0 | \
+            sudo tar --null -rf cache.tar -T - 2>/dev/null || true
+
+      - uses: actions/cache/save@v4
+        id: save-cache
+        with:
+          path: cache.tar
+          key: mkosi-buildernet-${{ github.run_id }}