CockroachDB cluster in docker-compose

cockroach.docker-compose.yml

# See https://www.cockroachlabs.com/docs/v21.2/start-a-local-cluster-in-docker-mac.html
version: "3.9"
services:
  roach1:
    image: "cockroachdb/cockroach:v21.2.2"
    container_name: taxonTree-roach1
    hostname: roach1
    networks: [ roachnet ]
    volumes: [ "roach1-data:/cockroach/cockroach-data" ]
    command:
    - start
    - --insecure
    - --join=roach1,roach2,roach3
    ports:
    - "26257:26257"
    - "8080:8080"

  roach2:
    image: "cockroachdb/cockroach:v21.2.2"
    container_name: taxonTree-roach2
    depends_on: [ roach1 ]
    hostname: roach2
    networks: [ roachnet ]
    volumes: [ "roach2-data:/cockroach/cockroach-data" ]
    command:
    - start
    - --insecure
    - --join=roach1,roach2,roach3

  roach3:
    image: "cockroachdb/cockroach:v21.2.2"
    container_name: taxonTree-roach3
    depends_on: [ roach1 ]
    hostname: roach3
    networks: [ roachnet ]
    volumes: [ "roach3-data:/cockroach/cockroach-data" ]
    command:
    - start
    - --insecure
    - --join=roach1,roach2,roach3

volumes:
  roach1-data:
    name: roach1-data
  roach2-data:
    name: roach2-data
  roach3-data:
    name: roach3-data

networks:
  roachnet:
    name: roachnet