Set dev container to development mode (#3584)

Dockerfile

@@ -30,6 +30,7 @@ CMD ["/app/vendor/phpunit/phpunit/phpunit"]
 
 FROM ospos AS ospos_dev
 
+RUN echo "CI_ENVIRONMENT=development" >> /app/.env
 RUN mkdir -p /app/bower_components && ln -s /app/bower_components /var/www/html/bower_components
 RUN yes | pecl install xdebug \
     && echo "zend_extension=$(find /usr/local/lib/php/extensions/ -name xdebug.so)" > /usr/local/etc/php/conf.d/xdebug.ini \