Unable to use COMPOSE_PROJECT_NAME in docker-compose

Hi,

Unable to use COMPOSE_PROJECT_NAME in docker-compose

Issue type - Environment variable COMPOSE_PROJECT_NAME has been set but when I do docker-compose up, COMPOSE_PROJECT_NAME value doest not get appended to container name.

OS Version/build - Red Hat Enterprise Linux Server release 7.2

App version - docker-compose version 1.10.0

Tried below steps:-
[snehas@dockervm1 e2e_cli_v1]$ docker-compose -v
docker-compose version 1.10.0, build 4bd6f1a
[snehas@dockervm1 e2e_cli_v1]$ echo $COMPOSE_PROJECT_NAME
sneha
[snehas@dockervm1 e2e_cli_v1]$ docker-compose -f docker-compose.yaml up -d
Creating network “sneha_default” with the default driver
Creating ccenv_snapshot
Creating couchdb1
Creating couchdb2
Creating orderer
Creating couchdb0
Creating couchdb3
Creating ccenv_latest
Creating peer0
Creating peer1
Creating peer2
Creating peer3
Creating cli

Also tried with command line with -p option
[snehas@dockervm1 e2e_cli_v1]$ docker-compose -f docker-compose.yaml -p sneha up -d
Creating network “sneha_default” with the default driver
Creating orderer
Creating ccenv_snapshot
Creating ccenv_latest
Creating couchdb3
Creating couchdb1
Creating couchdb0
Creating couchdb2
Creating peer0
Creating peer1
Creating peer2
Creating peer3
Creating cli