Since Traefik released version 2.0, they made breaking changes requiring different labels and a new way of thinking about how routing works. As a result, the Bender-traefik.xml template no longer works out of the box because it's trying to use v1.x configuration labels with version 2.0 which is incompatible.
I would recommend as a quick fix changing the repository tag from traefik:latest to traefik.v1.7 so it's up to date within the 1.x branch, and obviously as a longer term solution rewrite the whole thing for the version 2.0 release (if you want to).
Since Traefik released version 2.0, they made breaking changes requiring different labels and a new way of thinking about how routing works. As a result, the Bender-traefik.xml template no longer works out of the box because it's trying to use v1.x configuration labels with version 2.0 which is incompatible.
I would recommend as a quick fix changing the repository tag from
traefik:latest
totraefik.v1.7
so it's up to date within the 1.x branch, and obviously as a longer term solution rewrite the whole thing for the version 2.0 release (if you want to).