Create a small Groovy script that can be used in `settings.gradle`
files to extend `repositories` to support the various maven
repositories required for our build.
See gh-42333
Replace `DockerImageNames` with a enum and relocate it from the
`testcontainers` to `container` package. The enum now also
becomes a common location that we can use to apply container
configuration such as timeouts.
Closes gh-41164
Co-authored-by: Phillip Webb <phil.webb@broadcom.com>
Phillip Webb
Stéphane Nicoll
Andy Wilkinson
Phillip Webb