add warning for docker-compose-mongo.yml
add warning for docker-compose-mongo.yml

UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook_