fix: make docker reusable workflow more reusable (#11)

.github/workflows/docker-reusable.yml

@@ -93,7 +93,12 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       matrix: ${{ steps.matrix.outputs.matrix }}
+      build_id: ${{ steps.build_id.outputs.build_id }}
     steps:
+      - name: Generate unique build id
+        id: build_id
+        run: echo "build_id=$(openssl rand -hex 5)" >> $GITHUB_OUTPUT
+
       - name: Compute matrix
         id: matrix
         uses: fabiocaccamo/create-matrix-action@v5
@@ -104,16 +109,16 @@ jobs:
 
   # Build platform specific image
   build:
+    name: Build ${{ matrix.os }}/${{ matrix.arch }}
+    runs-on: ${{ matrix.builder }}
     needs: compute
     strategy:
       fail-fast: true
       matrix:
         include: ${{ fromJson(needs.compute.outputs.matrix) }}
-
-    name: Build ${{ matrix.os }}/${{ matrix.arch }}
-    runs-on: ${{ matrix.builder }}
     env:
       PLATFORM: ${{ format('{0}/{1}', 'linux', matrix.arch) }}
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -175,7 +180,7 @@ jobs:
       - name: Docker - Upload digest
         uses: actions/upload-artifact@v4
         with:
-          name: digests-${{ matrix.arch }}
+          name: digests-${{ needs.compute.outputs.build_id }}-${{ matrix.arch }}
           path: /tmp/digests/*
           if-no-files-found: error
           retention-days: 1
@@ -185,7 +190,7 @@ jobs:
   publish:
     name: Publish multi-platform image
     runs-on: ubuntu-latest
-    needs: build
+    needs: [build, compute]
     steps:
       - name: Docker - Variables
         run: |
@@ -214,7 +219,7 @@ jobs:
         uses: actions/download-artifact@v4
         with:
           path: /tmp/digests
-          pattern: digests-*
+          pattern: digests-${{ needs.compute.outputs.build_id }}-*
           merge-multiple: true
 
       - name: Docker - Set up Buildx