Enable build of all docker images

Currently, the docker image publish workflow only builds
updated Docker images. Build and publish all Docker images
when GERRIT_REFSPEC is empty.

Change-Id: I494f9eec4097005147b707714cddb3b715ad5298
Signed-off-by: Saheer Babu <saheer.babu@arm.com>
diff --git a/ci-dockerfiles-deployment/builders.sh b/ci-dockerfiles-deployment/builders.sh
index 4c5e219..1183083 100644
--- a/ci-dockerfiles-deployment/builders.sh
+++ b/ci-dockerfiles-deployment/builders.sh
@@ -47,9 +47,15 @@
 
 df -h
 
-git_previous_commit=$(git rev-parse HEAD~1)
-git_commit=$(git rev-parse HEAD)
-files=$(git diff --name-only ${git_previous_commit} ${git_commit})
+#if GERRIT_REFSPEC is not set build all Docker images
+if [ -z "$GERRIT_REFSPEC" ]; then
+  files=$(find . -type f -name build.sh)
+else
+  git_previous_commit=$(git rev-parse HEAD~1)
+  git_commit=$(git rev-parse HEAD)
+  files=$(git diff --name-only ${git_previous_commit} ${git_commit})
+fi
+
 echo Changes in: ${files}
 changed_dirs=$(dirname ${files}|sort -u)