-conf_images=("$(grep -r IMAGE_NAME --include \*.cfg jenkins-config \
- | awk -F'=' '{print $2}' | sort -u)")
-# If there are no yaml files the 'grep' will fail, which is OK
-yaml_images=("$(grep -r 'ZZCI - ' --include \*.yaml jjb \
- | awk -F": " '{print $3}' | sed "s:'::;s:'$::;/^$/d" \
- | sort -u)") || true
-readarray -t images <<< "$(for i in "${conf_images[@]}" "${yaml_images[@]}"; do \
- echo "$i"; done | sort)"
+declare -a images
+images+=("$(grep -r IMAGE_NAME --include \*.cfg jenkins-config \
+ | awk -F'=' '{print $2}' | sort -u)")
+set +o pipefail # Not all projects have images in YAML files and grep returns non-zero on 0 results
+# Ignore SC2179 since we do not want () to result in an empty array item.
+#shellcheck disable=SC2179
+images+=("$(grep -r 'ZZCI - ' --include \*.yaml jjb \
+ | awk -F": " '{print $3}' | sed -e "s:'::;s:'$::;/^$/d" -e 's/^"//' -e 's/"$//' | sort -u)")
+set -o pipefail
+readarray -t images <<< "$(for i in "${images[@]}"; do echo "$i"; done | sort -u)"