added Debian installation instructions

docs/installationguide/debian.rst

@@ -32,18 +32,12 @@ Run the following commands.
 
     sudo apt update
     sudo apt upgrade
+    sudo apt install mariadb-server
     sudo apt install zoneminder
 
-**Step 3:** Initialize database
+When mariadb is installed for the first time, it doesn't add a password to the root user. Therefore, for security, it is recommended to run ``mysql secure installation``.
 
-Run the following commands.
+**Step 3:** Setup permissions for zm.conf
-
-::
-
-    cat /usr/share/zoneminder/db/zm_create.sql | sudo mariadb
-    echo 'grant lock tables,alter,create,select,insert,update,delete,index on zm.* to 'zmuser'@localhost identified by "zmpass";' | sudo mariadb
-
-**Step 4:** Setup permissions for zm.conf
 
 To make sure zoneminder can read the configuration file, run the following command.
 
@@ -51,42 +45,6 @@ To make sure zoneminder can read the configuration file, run the following comma
 
     sudo chgrp -c www-data /etc/zm/zm.conf
 
-**Step 5:** Edit Timezone in PHP
-
-Automated way:
-::
-
-    sudo sed -i "s/;date.timezone =/date.timezone = $(sed 's/\//\\\//' /etc/timezone)/g" /etc/php/7.*/apache2/php.ini
-
-Manual way
-::
-
-    sudo nano /etc/php/7.*/apache2/php.ini
-
-Search for [Date] (Ctrl + w then type Date and press Enter) and change
-date.timezone for your time zone. Don't forget to remove the ; from in front
-of date.timezone.
-
-::
-
-        [Date]
-        ; Defines the default timezone used by the date functions
-        ; http://php.net/date.timezone
-        date.timezone = America/New_York
-
-CTRL+o then [Enter] to save
-
-CTRL+x to exit
-
-**Step 6:** Reload Apache and start zoneminder
-
-Run the following commands.
-
-::
-
-    sudo systemctl reload apache2
-    sudo systectl start zoneminder
-
 Congratulations! You should now be able to access zoneminder at ``http://yourhostname/zm``
 
 Easy Way: Debian Buster