Add function to change hostname and port in docker deployments

[tz1112]

Description

Currently, it is not possible to change the weaviate hostname and port for the docker deployment, as the hostname is hardcoded and the port information is not passed on to method connect_to_docker in goldenverba/components/managers.py.
Adding a port parameter to goldenverba/components/managers.py:connect_to_docker and parsing the respective values from environment variable WEAVIATE_URL_VERBA fixes the issue.