Fix erroneous boolean in compose.yml #84
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The word `On` is a boolean in YAML, so we need to use `"On"` instead because Docker Compose's environment feature expects a string value. ``` $ make up Starting up containers for my_wordpress_project... docker-compose pull ERROR: The Compose file './compose.yml' is invalid because: services.php.environment.PHP_MAIL_MIXED_LF_AND_CRLF contains true, which is an invalid type, it should be a string, number, or a null make: *** [docker.mk:16: up] Error 1 ```
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The word
Onis a boolean in YAML, so we need to use"On"instead because Docker Compose's environment feature expects a string value.