new changes related to docker file and API bug fix

admins_service/Dockerfile

admins_service/main.py

bikes_service/Dockerfile

bikes_service/local_bike.db

bikes_service/main.py

microservices/admins_service/requirements.txt

microservices/bikes_service/requirements.txt

microservices/my_ride.db

microservices/rentals_service/requirements.txt

microservices/reviews_service/requirements.txt

microservices/users_service/requirements.txt

rentals_service/Dockerfile

rentals_service/main.py

reviews_service/Dockerfile

reviews_service/main.py

users_service/Dockerfile

users_service/main.py