fix(ci): violently purge buildx containers to avoid overlayfs corruption

.gitea/workflows/deploy.yml

@@ -167,6 +167,9 @@ jobs:
           sudo rm -rf /opt/hostedtoolcache/CodeQL || true
 
           # Comprehensive Docker purge
+          docker buildx stop || true
+          docker buildx rm -a || true
+          docker rm -fv $(docker ps -aq --filter "ancestor=moby/buildkit") || true
           docker system prune -af --volumes
           docker builder prune -af
           docker buildx prune -af
@@ -241,8 +244,6 @@ jobs:
       DIRECTUS_URL: ${{ needs.prepare.outputs.directus_url }}
       DIRECTUS_HOST: cms.${{ needs.prepare.outputs.traefik_host }}
 
-
-
       # Mail
       MAIL_HOST: ${{ secrets.SMTP_HOST || vars.SMTP_HOST }}
       MAIL_PORT: ${{ secrets.SMTP_PORT || vars.SMTP_PORT || '587' }}