fix(deploy): optimize Dockerfile for disk efficiency and add runner diagnostics

.gitea/workflows/deploy.yml

@@ -154,9 +154,14 @@ jobs:
         run: |
           echo "${{ secrets.REGISTRY_PASS }}" | docker login registry.infra.mintel.me -u "${{ secrets.REGISTRY_USER }}" --password-stdin
 
-      - name: 🧹 Clean runner
+      - name: Clean runner
         run: |
+          echo "Disk space before prune:"
+          df -h
           docker system prune -af --volumes
+          docker builder prune -af
+          echo "Disk space after prune:"
+          df -h
         continue-on-error: true
 
       - name: 🏗️ Build and Push