Merge pull request #1 from AnastaZIuk/master

Cache hits

Author: AnastaZIuk

.github/workflows/main.yml

@@ -15,18 +15,55 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@v4
 
-      - name: Download BuildKit
+      - name: Restore Cached Image TAR
+        uses: actions/cache@v4
+        with:
+          path: cache-image.tar
+          key: docker-image-${{ runner.os }}-${{ github.sha }}
+          restore-keys: |
+            docker-image-${{ runner.os }}-
+
+      - name: Load Cached Image
+        shell: pwsh
+        id: load_cache
         run: |
-          curl -SL --output buildx.exe https://github.com/docker/buildx/releases/download/v0.22.0-rc1/buildx-v0.22.0-rc1.windows-amd64.exe
+          if (Test-Path cache-image.tar) {
+            docker load -i cache-image.tar
+            echo "CACHE_HIT=true" >> $env:GITHUB_ENV
+          }
 
-      - name: Build Image
+      - name: Build Image Without Cache
+        if: env.CACHE_HIT != 'true'
         shell: pwsh
         run: |
           docker build -f docker/mount.dockerfile -t app:latest .
 
-      - name: Cache Image with GHA
+      - name: Build Image With Cache
+        if: env.CACHE_HIT == 'true'
+        shell: pwsh
+        run: |
+          New-Item -Path build.log -ItemType File -Force
+          docker build --cache-from app:latest -f docker/mount.dockerfile -t app:latest . | Tee-Object -FilePath build.log
+          $cache_hits = (Get-Content build.log | Select-String -Pattern '---> Using cache' | Measure-Object).Count
+          $steps_with_cache = (Get-Content build.log | Select-String -Pattern '^Step [0-9]+/' | Where-Object { $_ -notmatch 'FROM' } | Measure-Object).Count
+          if ($cache_hits -eq $steps_with_cache) {
+            echo "FULL_CACHE_HIT=true" >> $env:GITHUB_ENV
+            Write-Host "Full cache hit, all layers were used from source cache."
+          } else {
+            Write-Host "Partial cache hit, some layers were rebuilt."
+          }
+
+      - name: Save Docker Image to TAR
+        if: env.FULL_CACHE_HIT != 'true'
         shell: pwsh
         run: |
-          $env:DOCKER_BUILDKIT=1
-          $env:BUILDX_EXPERIMENTAL=1
-          .\buildx.exe build --push -f docker/xcache.dockerfile --cache-to type=gha,mode=max --cache-from type=gha -t docker.io/library/app:latest .
+          docker save -o cache-image.tar app:latest
+      
+      - name: Cache Image TAR
+        if: env.FULL_CACHE_HIT != 'true'
+        uses: actions/cache@v4
+        with:
+          path: cache-image.tar
+          key: docker-image-${{ runner.os }}-${{ github.sha }}
+          restore-keys: |
+            docker-image-${{ runner.os }}-