This does a few small things:
1. Prefer invoking rake tasks via ./gradlew vs rake. This prevents Java from segfaulting on docker for unknown reasons
2. Remove use of COPYING.csv which has already been removed
This commit includes:
* A base Dockerfile and script to push to a Docker repo
* A per-build Dockerfile (derived from the base)
* Updates to the test scripts to allow for more parallel builds
* Docker wrappers for the tests scripts
* Update for the integration test readme to manually run the tests
* Clean up the output of the Java tests
* Remove offline tag for tests (no longer needed that we don't use docker dependent services)
This commit does NOT include:
* Changes needed for the CI system to use Docker
Fixes#8223
