ci: skip containerized-tests for doc-only PRs

Signed-off-by: Niels de Vos <ndevos@redhat.com>

scripts/skip-doc-change.sh

@@ -0,0 +1,38 @@
+#!/bin/bash -e
+#
+
+GIT_SINCE="${1}"
+if [ -z "${GIT_SINCE}" ]; then
+	GIT_SINCE='origin/master'
+fi
+
+CHANGED_FILES=$(git diff --name-only "${GIT_SINCE}")
+
+[[ -z $CHANGED_FILES ]] && exit 1
+
+skip=0
+#files to be skipped
+declare -a FILES=(^docs/ .md$ ^scripts/ LICENSE .mergify.yml .github .gitignore)
+
+function check_file_present() {
+    local file=$1
+    for FILE in "${FILES[@]}"; do
+        if [[ $file =~ $FILE ]]; then
+            if [[ $file =~ (minikube.sh|travis-functest.sh) ]]; then
+                continue
+            fi
+            return 0
+        fi
+    done
+    return 1
+}
+
+for CHANGED_FILE in $CHANGED_FILES; do
+    if ! check_file_present "$CHANGED_FILE"; then
+        skip=1
+    fi
+done
+if [ $skip -eq 0 ]; then
+    echo "doc change only"
+    exit 1
+fi