docker compose config for simple 3-node insecure cockroach cluster

docker-compose.yml

version: "3"
services:

  db1:
    image: "cockroachdb/cockroach:v23.1.8"
    container_name: db1
    hostname: db1
    restart: on-failure
    ports:
      - "26257:26257"
      - "8080:8080"
    volumes:
      - "./test-data/db1:/cockroach/cockroach-data"
    command: "start --insecure --join=db1,db2,db3"
    networks:
      - testnet

  db2:
    image: "cockroachdb/cockroach:v23.1.8"
    container_name: db2
    hostname: db2
    restart: on-failure
    volumes:
      - "./test-data/db2:/cockroach/cockroach-data"
    command: "start --insecure --join=db1,db2,db3"
    networks:
      - testnet

  db3:
    image: "cockroachdb/cockroach:v23.1.8"
    container_name: db3
    hostname: db3
    restart: on-failure
    volumes:
      - "./test-data/db3:/cockroach/cockroach-data"
    command: "start --insecure --join=db1,db2,db3"
    networks:
      - testnet

networks:
  testnet: