var env for mailer

.env

@@ -39,6 +39,7 @@ DATABASE_URL=mysql://framadate-admin:framadate-admin-password@127.0.0.1:3306/fra
 MAILER_URL=sendmail://YOUR_WEBSITE
 # set the support email who will answer users in case of emergency
 SUPPORT_EMAIL=support-framadate@YOUR_WEBSITE
+SPOOL_PATH=/var/www/html/date-poll-api/var/email/spool
 ###< symfony/swiftmailer-bundle ###
 
 ###> nelmio/cors-bundle ###

config/packages/swiftmailer.yaml

@@ -2,4 +2,4 @@ swiftmailer:
     url: '%env(MAILER_URL)%'
     spool:
         type: 'file'
-        path: /var/www/html/date-poll-api/var/email/spool
+        path: '%env(SPOOL_PATH)%'