CI: coerce a new image builder run outside the schedule

.github/workflows/images.yml

diff --git a/.github/workflows/images.yml b/.github/workflows/images.yml
index dd4fe9a..ac6f504 100644
--- a/.github/workflows/images.yml
+++ b/.github/workflows/images.yml
@@ -8,6 +8,7 @@
   push:
     branches:
       - master
+      - trigger-ciimage-builder
     paths:
       - 'ci/ciimage/**'
       - '.github/workflows/images.yml'

ci/ciimage/common.sh

diff --git a/ci/ciimage/common.sh b/ci/ciimage/common.sh
index 6209ef9..239352a 100644
--- a/ci/ciimage/common.sh
+++ b/ci/ciimage/common.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 
+
 ###
 ### Common functions for CI builder files.
 ### All functions can be accessed in install.sh via: