unsupported protocol scheme ""

[nahida05]

Docker logs as below

Starting registrator v7 ...
Using etcd adapter: etcd://etcd:2379
Connecting to backend (0/0)
Get 404%20page%20not%20found/v2/version: unsupported protocol scheme ""

Docker version 18.09.7

my docker-compose file:

etcd:
container_name: etcd
image: "bitnami/etcd:latest"
environment:
- ALLOW_NONE_AUTHENTICATION=yes
- ETCD_ADVERTISE_CLIENT_URLS=http://etcd:2379
ports:
- 2379:2379
- 2380:2380
networks:
- micro-net

registrator:
container_name: registrator
image: gliderlabs/registrator:master
volumes:
- /var/run/docker.sock:/tmp/docker.sock
networks:
- micro-net
command: "etcd://etcd:2379"
depends_on:
- etcd