How to take bamboo environment variable into a Makefile which passes the variables into docker

[Nandagopal]

I would like to access the environment variables defined in bamboo from a Makefile which inturn passes these variables into a docker build command.

for eg:- 

build:  

docker build --pull --no-cache \    

--build-arg proxy="http://$(PROXY)" \   

 --build-arg PACKAGE_NAME=$(PACKAGE_NAME) \   

I would like to access those bamboo variables inside this Makefile so that I can pass those as "--build-arg".

Is this possible? if yes could you guys please help.