new section on installation from git

doc/README.Install.md

@@ -254,6 +254,29 @@ in your current installation with new versions from the quickstart archive.
    contain database updates.
 
 
+Installing from git
+====================
+
+SeedDMS is hosted at https://codeberg.org/SeedDMS
+
+In order to install SeedDMS you need to:
+
+1. Create a directory, e.g. seeddms
+   `mkdir seeddms`
+2. Change into that directory
+   `cd seeddms`
+3. Clone the various SeedDMS repositories
+   `git clone https://codeberg.org/SeedDMS/seeddms.git`
+   `git clone -b seeddms-5.1.x https://codeberg.org/SeedDMS/core.git`
+   `git clone https://codeberg.org/SeedDMS/preview.git`
+   `git clone https://codeberg.org/SeedDMS/lucene.git`
+   `git clone https://codeberg.org/SeedDMS/ѕqlitefts.git`
+   `git clone https://codeberg.org/SeedDMS/http_webdav_server.git`
+4. Run composer
+   `composer update`
+5. Create an installable distribution
+   `vendor/bin/phing -Dversion=$(php -r 'include "inc/inc.Version.php"; echo (new SeedDMS_Version())->version();') package`
+
 THE LONG STORY
 ================