Provide additional params for Docker container creation and/or run

1. There are a number of typical params that are configured for production brXM instances, and it should be possible to pass these to configure the docker container. It is debatable whether these should be configured once at container creation or passed on each run of tomcat within an existing container.

Examples taken from:

https://documentation.bloomreach.com/library/enterprise/installation-and-configuration/linux-installation-manual.html

https://developers.bloomreach.com/blog/2019/bloomreach-cms-integration-with-docker-and-docker-compose.html

https://github.com/woonsanko/recipe-for-dockerizing-hippo-cms/blob/master/examples/Dockerfile
{{}}
{{CLUSTER_ID => org.apache.jackrabbit.core.cluster.node_id (system property – container creation)}}
{{}}
REPO_BOOTSTRAP => }}repo.bootstrap (system property – tomcat run){{
MAX_HEAP=512
MIN_HEAP=256
{{}}
(various mail-handling options)
(various GC options)
 
Bundle cache sizes (main and versioning)
https://documentation.bloomreach.com/library/administration/configure-the-bundlecache.html
 
Tomcat maxThreads