services:
#  mariadb:
#    image: 'mariadb:latest'
#    environment:
#      - 'MARIADB_DATABASE=mydatabase'
#      - 'MARIADB_PASSWORD=secret'
#      - 'MARIADB_ROOT_PASSWORD=verysecret'
#      - 'MARIADB_USER=myuser'
#    ports:
#      - '3306'
#  postgres:
#    image: 'postgres:latest'
#    environment:
#      - 'POSTGRES_DB=mydatabase'
#      - 'POSTGRES_PASSWORD=secret'
#      - 'POSTGRES_USER=myuser'
#    ports:
#      - '5432'
  redis:
    image: 'redis:latest'
    ports:
      - '6379'