docker compose environment variables code example

Example 1: docker compose env

# environment vars
  environment:
    RACK_ENV: development
  environment:
    - RACK_ENV=development

Example 2: healthcheck docker compose

healthcheck:
  test: ["CMD", "curl", "-f", "http://localhost"]
  interval: 1m30s
  timeout: 10s
  retries: 3
  start_period: 40s

Example 3: docker compose entrypoint

healthcheck:
  test: ["CMD", "curl", "-f", "http://localhost"]
  interval: 1m30s
  timeout: 10s
  retries: 3
  start_period: 40s