mute errors due to failed incoming network connections (#2497)

* mute errors due to failed incoming network connections

* fix log entry formatting

* Update cleanDanglingImages

* Update cleanDanglingImages

build/lib/motd

@@ -29,5 +29,6 @@ printf "\n"
 printf " * Documentation:  https://docs.start9.com\n"
 printf " * Management:     https://%s.local\n" "$(hostname)"
 printf " * Support:        https://start9.com/contact\n"
+printf " * Source Code:    https://github.com/Start9Labs/start-os\n"
 printf " * License:        MIT\n"
 printf "\n"

build/registry/cleanDanglingImages

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+for image in $(find /root/resources/eos/ -type f -name '*.squashfs' -mmin +240 -exec realpath {} \;); do
+        if ! mount | grep "^$image" > /dev/null; then
+                >&2 echo "Removing dangling image: $image"
+                rm $image
+        fi
+done
+find /root/resources/eos -type d -empty -delete