revert rat excludes for test resources in geb-containers.

revert changes to browser in real-browser test config.

revert changes to build-in-docker.sh and delete dockerfile and docker-entrypoint.sh.

remove creation of dedicated browser integration tasks from build.

rename browser capability for test.

add firefox as default geb.env for integrationTest

fix codenarc violations

Use annotation-driven configuration

Attempt to fix flaky test

Fix integration test task to run and accept specific tests

Refactor test containers to use base class pattern

rename geb-testontainers packages to geb.testcontainers

add container building section.

rename grails system properties.

remove unneeded testcontainer setting from dockerfile.