build/armbian/Vagrantfile: Improve output during build

Signed-off-by: Tobias K <[email protected]>

build/armbian/Vagrantfile

@@ -27,12 +27,19 @@ Vagrant.configure("2") do |config|
 
   $script = <<-SHELL
     sudo su
-    set -ex
+    set -e
     systemctl stop apparmor
     #mount -t cgroup cgroup /sys/fs/cgroup
     DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends git ca-certificates cgroupfs-mount
     mount -t cgroup cgroup /sys/fs/cgroup
     cd /tmp/nextcloudpi
+    {
+        while ! [ -f "/tmp/nextcloudpi/armbian/.tmp/logs-"*/*".customize_image.log" ]
+        do
+          sleep 1
+        done
+        tail -f "/tmp/nextcloudpi/armbian/.tmp/logs-"*/*".customize_image.log"
+    } &
     ./build/build-SD-armbian.sh "${BOARD_ID?}" "${BOARD_NAME?}"
     mv /tmp/nextcloudpi/armbian/output/*.img /tmp/ncp-out/
   SHELL