There is a Docker image available for this tool: [danielhuisman/traefik-certificate-extractor](https://hub.docker.com/r/danielhuisman/traefik-certificate-extractor/).
Example run:
```
docker run --name extractor -d -v /srv/extractor/data:/app/data -v /srv/extractor/certs:/app/certs danielhuisman/traefik-certificate-extractor