Starting a PostgreSQL, Elasticsearch and Redis environment for testing purposes.

process-compose.yaml

version: "0.5"

vars:
  ELASTIC_VERSION: "8.18.1"
  POSTGRES_PORT: "5432"
  DATA_DIR: "./data"

processes:
  postgres:
    command: |
      initdb -D ./data/postgres || true
      postgres -D ./data/postgres -p 5432
    environment:
      - PGHOST=localhost
      - PGPORT=5432
    readiness_probe:
      exec:
        command: pg_isready -h localhost -p 5432
      initial_delay_seconds: 2
      period_seconds: 2

  elasticsearch:
    command: |
      if [ ! -d ./vendor/elasticsearch-${ELASTIC_VERSION} ]; then
          mkdir -p ./vendor
          curl -L -o ./vendor/es.tar.gz https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-${ELASTIC_VERSION}-linux-x86_64.tar.gz
          tar xzf ./vendor/es.tar.gz -C ./vendor
          rm ./vendor/es.tar.gz
      fi
      ./vendor/elasticsearch-${ELASTIC_VERSION}/bin/elasticsearch
    environment:
      - ES_JAVA_OPTS=-Xms256m -Xmx256m
      - discovery.type=single-node
      - xpack.security.enabled=false
      - path.data=./data/elasticsearch
      - path.logs=./data/elasticsearch/logs
    readiness_probe:
      http_get:
        host: localhost
        port: 9200
        path: /_cluster/health
      initial_delay_seconds: 5
      period_seconds: 3

  redis:
    command: |
      mkdir -p ./data/redis
      redis-server --dir ./data/redis --port 6379
    readiness_probe:
      exec:
        command: redis-cli -p 6379 ping
      initial_delay_seconds: 1
      period_seconds: 2

  init:
    command: psql -h localhost -p 5432 -U $(whoami) -d postgres -f init.sql
    disabled: ${SKIP_INIT:-false}
    availability:
      restart: "no"
      exit_on_end: false
    depends_on:
      postgres:
        condition: process_healthy

You can skip the initialization like so:

SKIP_INIT=true process-compose up