Continuous mirroring

docker-compose.yml

version: '2'

services:
  minio:
    image: minio/minio
    container_name: miniobkp
    ports:
      - 9000:9000
    env_file:
      - ./minio.env
    command: server /export
    volumes:
      - minio:/root/.minio/
      
  mc:
    image: minio/mc
    depends_on:
      - minio
    container_name: mcbkp
    env_file:
      - ./minio.env
    entrypoint: >
      /bin/sh -c "
      echo /usr/bin/mc config host a src https://play.minio.io:9000 $${PLAY_ACCESS_KEY} $${PLAY_SECRET_KEY};
      /usr/bin/mc config host a src https://play.minio.io:9000 $${PLAY_ACCESS_KEY} $${PLAY_SECRET_KEY};
      /usr/bin/mc config host a bkp http://minio:9000 $${MINIO_ACCESS_KEY} $${MINIO_SECRET_KEY};
      /usr/bin/mc mirror -w src bkp;
      "

volumes:
  minio:

minio.env

MINIO_ACCESS_KEY=minio
MINIO_SECRET_KEY=minio123
PLAY_ACCESS_KEY=Q3AM3UQ867SPQQA43P2F
PLAY_SECRET_KEY=zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG 

Thanks very clear instructions!

# credentials
MINIO_ROOT_USER=access_key
MINIO_ROOT_PASSWORD=secret_key

# first bucket
MINIO_FIRST_BUCKET=first
MINIO_FIRST_BUCKET_VERSION=v1

# second bucket
MINIO_SECOND_BUCKET=second
MINIO_SECOND_BUCKET_VERSION=v1

myminio - alias for minio connection

mc:
    image: minio/mc
    depends_on:
      - minio
    entrypoint: >
      /bin/sh -c "
      /usr/bin/mc config host add myminio http://minio:9000 ${MINIO_ROOT_USER} ${MINIO_ROOT_PASSWORD};
      
      /usr/bin/mc rm -r --force myminio/${MINIO_FIRST_BUCKET}/${MINIO_FIRST_BUCKET_VERSION};
      /usr/bin/mc mb myminio/${MINIO_FIRST_BUCKET}/${MINIO_FIRST_BUCKET_VERSION};
      /usr/bin/mc policy set download myminio/${MINIO_FIRST_BUCKET};
      
      /usr/bin/mc rm -r --force myminio/${MINIO_SECOND_BUCKET}/${MINIO_SECOND_BUCKET_VERSION};
      /usr/bin/mc mb myminio/${MINIO_SECOND_BUCKET}/${MINIO_SECOND_BUCKET_VERSION};
      /usr/bin/mc policy set download myminio/${MINIO_SECOND_BUCKET};