renovate: fix Containerfile assignment matching
The fileMatch configuration explicitly tells Renovate to parse and manage the Containerfile.
Renovate does not automatically recognize changes to Containerfile
because it
is not explicitly managed by the renovate dockerfile
manager. The matchPaths
rule only matches paths for updates that renovate has already identified, if its
not recognizing Containerfile changes, then the rule doesn't trigger.
I believe that this change will make renovate properly recognize and process the Containerfile changes and assign myself as the reviewer.