minio_compose

version: '2'

# starts 4 docker containers running minio server instances. Each
# minio server's web interface will be accessible on the host at port
# 9001 through 9004.
services:
  minio1:
    hostname: minio1
    image: minio/minio:edge
    ports:
      - "9001:9000"
    fip: <INSERT YOUR FIP HERE>
    environment:
      MINIO_ACCESS_KEY: minio
      MINIO_SECRET_KEY: minio123
    command: server http://minio1/export http://minio2/export http://minio3/export http://minio4/export
  minio2:
    hostname: minio2
    image: minio/minio:edge
    ports:
      - "9002:9000"
    environment:
      MINIO_ACCESS_KEY: minio
      MINIO_SECRET_KEY: minio123
    command: server http://minio1/export http://minio2/export http://minio3/export http://minio4/export
  minio3:
    hostname: minio3
    image: minio/minio:edge
    ports:
      - "9003:9000"
    environment:
      MINIO_ACCESS_KEY: minio
      MINIO_SECRET_KEY: minio123
    command: server http://minio1/export http://minio2/export http://minio3/export http://minio4/export
  minio4:
    hostname: minio4
    image: minio/minio:edge
    ports:
      - "9004:9000"
    environment:
      MINIO_ACCESS_KEY: minio
      MINIO_SECRET_KEY: minio123
    command: server http://minio1/export http://minio2/export http://minio3/export http://minio4/export

You should remove the "edge" tag its not needed anymore.