fix: bash install.sh script for mac os (#15874)

fix: bash script for mac os

Fix the displayed IP address in bash script if hostname fails to return a string

Co-authored-by: Joseph McKenna <dev@jtkmckenna.com>

install.sh

@@ -51,6 +51,10 @@ start_docker_compose() {
 show_friendly_message() {
   local ip_address
   ip_address=$(hostname -I | awk '{print $1}')
+  # If length of ip_address is 0, then we are on a Mac
+  if [ ${#ip_address} -eq 0 ]; then
+    ip_address=$(ipconfig getifaddr en0)
+  fi
   cat <<EOF
 Successfully deployed Immich!
 You can access the website or the mobile app at http://$ip_address:2283