Update MongoDB variable specification
This PR modifies the specification of the MongoDB related variables within the builder and subsequent docker images to align with the specification Erik (@ewojtylko1) provided.
Open question: Consider renaming MONGO_DATABASE_HOST which is actual the MongoDB connection string to MONGO_DATABASE_CONSTR. Presently this PR left it as the specified MONGO_DATABASE_HOST.
Update 2023-08-17: Decision was made to revise variable name to MONGO_DATABASE_CONSTR and this was updated in commit 2ed2e282.
Edited by Paul Tomasula