add docker label ocelot-version

.github/workflows/publish.yml

@@ -32,6 +32,8 @@ jobs:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Read $OCELOT_VERSION from file
+        run: cat .env >> $GITHUB_ENV
       - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@70b2cdc6480c1a8b86edf1777157f8f437de2166
@@ -45,8 +47,8 @@ jobs:
             type=ref,event=branch
             type=ref,event=pr
             type=sha
-      - name: Read $OCELOT_VERSION from file
-        run: cat .env >> $GITHUB_ENV
+          labels: |
+            ocelot-version=${{ env.OCELOT_VERSION }}
       - name: Build and push Docker images
         id: push
         uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75