how get env variables from docker in symfony yml config file

Question

in docker-compose.yml:

mysql:
  image: mysql:latest
  container_name: mysql
  environment:
    - MYSQL_ROOT_PASSWORD=root
    - MYSQL_DATABASE=symfony
    -          


        

Answer 1

There now (as of Symfony 3.2) is a syntax to do this in yaml files:

# app/config/parameters.yml
parameters:
    database_host: '%env(DATABASE_HOST)%'

see http://symfony.com/doc/current/configuration/external_parameters.html