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+Guacamole makes RDP or VNC desktops available via html5 inside EGroupware.
+EGroupware supplies account information, authentication via OpenID Connect
+and allows to manage connections.
+
+### EGroupware Guacamole app does the following:
+
+* Installs all tables (or views) for Apache Guacamole
+* Everything account-related is a view, not a table
+* EGroupware UI to create connections (Admin >> Guacamole >> Connections)
+* One has to use EGroupware to assign permissions to connections
+* Guacamole UI can be used to set advanced connection options
+
+> The app requires accounts stored in SQL. A workaround for using LDAP or ActiveDirectory for account storage (not just authentication), is to regularly use setup to migrate users and groups to SQL.
+
+### Installation instructions via your package manager
+
+#### Installation requirements (please check before attempting an installation!)
+* Installation must happen on same physical machine as EGroupware itself
+* You already installed EGroupware itself **AND** secured the installation with https / a certificate under it's final domain-name eg. https://example.org/egroupware
+* MariaDB/MySQL can be used by user root without entering a password, create a /root/my.cnf file with following content:
+```
+[client]
+password = my secret root password
+```
+#### Installation (as user root replacing example.org with your actual domain)
+```
+apt update
+HTTP_HOST=example.org apt install egroupware-guacamole
+```
+### List of resources / further reading:
+* [Apache Guacamole website](https://guacamole.apache.org)
+* [Using Guacamole section of Guacamole manual](https://guacamole.apache.org/doc/gug/using-guacamole.html)
+* [Administration section of Guacamole manual](https://guacamole.apache.org/doc/gug/administration.html) (keep in mind to use EGroupware UI to assign connection permissions!)
+* [Frequently Asked Questions from Guacamole](https://guacamole.apache.org/faq/)
+* [Guacamole installation instructions for EGroupware](https://github.com/EGroupware/egroupware/wiki/Guacamole)
+* [Guacamole category in our forum](https://help.egroupware.org/c/deutsch/guacamole) (German)
+* [Guacamole EGroupware application repo on GitHub](https://github.com/EGroupware/guacamole/)
+
+### Troubleshooting
+
+* check MariaDB/MySQL is not bound on localhost (package tries to change that to docker0 address 172.17.0.1)
+```
+netstat -ln | grep 3306
+tcp        0      0 172.17.0.1:3306         0.0.0.0:*               LISTEN
+```
+* check the log of the guacamole container
+```
+docker logs -f guacamole
+```
+* enable OpenID Connect request log in EGroupware (Administration > Applications > OpenID Connect / OAuth > Request log)
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diff --git a/Guacamole.md b/Guacamole.md
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-Guacamole makes RDP or VNC desktops available via html5 inside EGroupware.
-EGroupware supplies account information, authentication via OpenID Connect
-and allows to manage connections.
-
-#### EGroupware Guacamole app does the following:
-
-* Installs all tables (or views) for Apache Guacamole
-* Everything account-related is a view, not a table
-* EGroupware UI to create connections (Admin >> Guacamole >> Connections)
-* One has to use EGroupware to assign permissions to connections
-* Guacamole UI can be used to set advanced connection options
-
-> The app requires accounts stored in SQL. A workaround for using LDAP or ActiveDirectory for account storage (not just authentication), is to regulary use setup to migrate users and groups to SQL.
-
-#### List of ressources / further reading:
-* [Apache Guacamole website](https://guacamole.apache.org)
-* [Using Guacamole section of Guacamole manual](https://guacamole.apache.org/doc/gug/using-guacamole.html)
-* [Administration section of Guacamole manual](https://guacamole.apache.org/doc/gug/administration.html) (keep in mind to use EGroupware UI to assign connection permissions!)
-* [Frequently Asked Questions from Guacamole](https://guacamole.apache.org/faq/)
-* [Guacamole installation instructions for EGroupware](https://github.com/EGroupware/egroupware/wiki/Guacamole)
-* [Guacamole categegory in our Forum](https://help.egroupware.org/c/deutsch/guacamole) (German)
-* [Guacamole EGroupware application repo on GitHub](https://github.com/EGroupware/guacamole/)