Cassandra compose

cassandra-compose.yml

version: '3'
services:
  seed-node:
    image: cassandra
    volumes:
      - ./tmp/seed-node:/var/lib/cassandra
    ports:
      - "9042:9042"
      - "7199:7199"
      - "9160:9160"
  second-node:
    image: cassandra
    environment:
      - "CASSANDRA_SEEDS=seed-node"
    volumes:
      - ./tmp/second-node:/var/lib/cassandra
    depends_on:
      - seed-node
    command: /bin/bash -c "sleep 30 && echo ' -- Pausing to let system catch up ... -->' && /docker-entrypoint.sh cassandra -f"
  third-node:
    image: cassandra
    environment:
      - "CASSANDRA_SEEDS=seed-node"
    volumes:
      - ./tmp/third-node:/var/lib/cassandra
    command: /bin/bash -c "sleep 60 && echo ' -- Pausing to let system catch up ... -->' && /docker-entrypoint.sh cassandra -f"
    depends_on:
      - seed-node
      - second-node