Details:
- The Traefik v1 branch has been on maintenance mode for over a year
and is no longer guaranteed to receive security updates, see:
https://community.traefik.io/t/end-of-support-of-1-x/2451
- Updating of configuration files will be necessary for users who
have not previously used net/traefik2 (which was introduced in
2020Q2 to allow for the eventual depreciation of the v1 branch).
Instructions and a link to an automated migration tool are
provided in pkg-message.
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