I have updated the toolchain to sync with our latest configuration in other repos
I have replaced asdf-managed maven with maven wrapper (so that the project is easier to build for external contributors)
I have added an example Dockerfile, influenced by #35, but I massively simplified it
KAR plugin has an optional override for the artifact name, so that it's possible to strip version from the .kar file name (makes life easier when building docker image)
I have checked that it still works in docker-compose, and that all integration tests pass.
add example Dockerfile add maven wrapper upgrade tools and hooks