update software documentation

software/001-librewolf.qd

@@ -87,3 +87,6 @@ Download and Install the following extensions
    Check <https://github.com/catppuccin/userstyles/tree/main>.
    Usage guide: <https://userstyles.catppuccin.com/getting-started/usage/>
 
+## Enable PWAs
+
+Enable PWAs by setting `browser.taskbarTabs.enabled` to `true` in `about:config`

software/007-kdeconnect.md

@@ -0,0 +1,5 @@
+.docname {KDE Connect}
+.include {docs}
+
+KDE connect provides features to connect to Android.
+Install `kdeconnect`

software/008-docker.md

@@ -0,0 +1,7 @@
+.docname {Docker}
+.include {docs}
+
+Install the package `docker`. Make sure that the user is in the group `docker`:
+`sudo usermod -aG docker $USER`.
+
+If the group does not yet exist, it can be created with `groupadd -r docker`.