Reorganize files

.example.env

@@ -0,0 +1,13 @@
+OPENPROJECT_TAG=16-slim
+OPENPROJECT_HTTPS=true
+OPENPROJECT_HOST__NAME=openproject.tvcloud.fr
+OPENPROJECT_HSTS=true
+RAILS_CACHE_STORE=memcache
+OPENPROJECT_CACHE__MEMCACHE__SERVER=openproject-cache:11211
+DATABASE_URL=postgres://postgres:pswd@openproject-db/openproject?pool=20&encoding=unicode&reconnect=true
+RAILS_MIN_THREADS=4
+RAILS_MAX_THREADS=16
+# set to true to enable the email receiving feature. See ./docker/cron for more options
+IMAP_ENABLED=false
+OPENPROJECT=openproject
+OPENPROJECT_DB=openproject-db