Update third_party-rainloop.md

docs/third_party-rainloop.md

@@ -1,36 +1,14 @@
-Create folder for RainLoop in `mailcow-dockerized/data/web` 
-Download installer.php and run it from php docker container. 
-Remove installer.php
-Login servername/rainloop/?admin
-Change password from 12345
+1\. Create a new subdirectory for rainloop and download the RainLoop installer:
 ```
-cd data/web
-mkdir rainloop
-cd rainloop
-curl -s http://repository.rainloop.net/installer.php >> installer.php
-# run php file from php docker image, which should be already running along others. 
-# your container name might be different from mailcowdockerized_php-fpm-mailcow_1 -
-# use `docker ps` to find out
-
-docker exec -it mailcowdockerized_php-fpm-mailcow_1 php /web/rainloop/installer.php
-
-       [RainLoop Webmail Installer]
-
-
- * Connecting to repository ...
- * Downloading package ...
- * Complete downloading!
- * Installing package ...
- * Complete installing!
-
- * [Success] Installation is finished!
-
-rm installer.php
+mkdir data/web/rainloop
+curl -o data/web/rainloop/installer.php -s http://repository.rainloop.net/installer.php
 ```
 
-**login servername/rainloop/?admin to changepassword** and setup connection to mailcow
+2\. Run the installert from within the PHP-FPM mailcow container:
+```
+docker exec -it $(docker ps -qf name=php-fpm-mailcow) php /web/rainloop/installer.php
+```
 
-In domain section add desired domain
-IMAP dovecot
-SMTP postfix
-Secure STARTTSL on both
+3\. Login to ${MAILCOW_HOSTNAME}/rainloop/?admin` to set a password
+
+Add and configure a new domain as you need.