docker-compose.yml

# Version 3, most current, and recommended compose file version
# https://docs.docker.com/compose/compose-file/compose-versioning/
version: '3'

services:
  # First service
  telescope:
    build:
      context: .
      dockerfile: Dockerfile
    env_file: .env
    environment:
      # a place-holder for the variable passed by CLI with a default value
      # the passed or default value is a command to run `telescope`
      - script=${script:-start}
      # override the .env variable for `REDIS_URL`
      - REDIS_URL=redis://redis:${REDIS_PORT}
    depends_on:
      - redis
    ports:
      - '$PORT:$PORT'

  # Second service
  redis:
    image: redis:latest
    ports:
      - '$REDIS_PORT:$REDIS_PORT'

  # Third service
  # SSO Identity Provider test service, https://simplesamlphp.org
  # Access to the authentication page via http://localhost:8080/simplesaml or https://localhost:8443/simplesaml
  ssoipd:
    environment:
      - SIMPLESAMLPHP_SP_ENTITY_ID=${OIDC_CLIENT_ID:-saml-poc}
      - SIMPLESAMLPHP_SP_ASSERTION_CONSUMER_SERVICE=${OIDC_REDIRECT_URI}
    # image owner's blog post https://medium.com/disney-streaming/setup-a-single-sign-on-saml-test-environment-with-docker-and-nodejs-c53fc1a984c9
    image: kristophjunge/test-saml-idp
    ports:
      # These ports + port 80 are pre-defined in the latter image
      # http port
      - '8080:8080'
      # https port
      - '8443:8443'