refactor: improve shell script reliability

.github/scripts/generate-chart-exclude-string.sh

@@ -7,7 +7,7 @@ chartDir="$projectRootPath/charts"
 excludePaths=$(
 	find "$chartDir" -type d -mindepth 1 -maxdepth 1 |
 		sed "s~$projectRootPath/~~" |
-		egrep -v "^$chartPath$" |
+		grep -Ev "^$chartPath$" |
 		awk -F "/" '{ print $2 }' |
 		tr '\n' ',' |
 		sed 's/,$//g'

.github/scripts/generate-config.sh

@@ -5,21 +5,24 @@ changedCharts=$2
 
 projectRootPath=$(git rev-parse --show-toplevel)
 if [ "$ciChanged" == false ]; then
-	charts=($(echo "$changedCharts" |
+	chartStr=$(echo "$changedCharts" |
 		jq -r .[] |
 		awk -F '/' '{ print $1"/"$2 }' |
 		sort |
 		uniq)
-	)
+	charts=()
+	while IFS='' read -r line; do charts+=("$line"); done < <(echo "$chartStr")
 else
-	charts=($(find "$projectRootPath/charts" -type d -mindepth 1 -maxdepth 1 | sed "s~$projectRootPath/~~"))
+	chartStr=$(find "$projectRootPath/charts" -type d -mindepth 1 -maxdepth 1 | sed "s~$projectRootPath/~~")
+	charts=()
+	while IFS='' read -r line; do charts+=("$line"); done < <(echo "$chartStr")
 fi
 
 index=0
 chartsJsonArray=()
 matrixJsonArray=()
 for chartPath in "${charts[@]}"; do
-	chartName=$(basename $chartPath)
+	chartName=$(basename "$chartPath")
 	settings=$(yq -o=json '.' "$projectRootPath/$chartPath/ci.yaml")
 	chartJson=$(
 		jq --null-input \
@@ -29,7 +32,10 @@ for chartPath in "${charts[@]}"; do
 			'{"name": $name, "path": $path, "settings": $settings}'
 	)
 	chartsJsonArray+=("$chartJson")
-	versions=($(echo "$settings" | jq -r -c '.kubernetes.supportedVersions[]'))
+	versions=()
+	versionsStr=$(echo "$settings" | jq -r -c '.kubernetes.supportedVersions[]')
+	while IFS='' read -r line; do versions+=("$line"); done < <(echo "$versionsStr")
+
 	for version in "${versions[@]}"; do
 		matrixJson=$(
 			jq --null-input \

.github/scripts/install-custom-resource-definitions-test.sh

@@ -1,6 +1,11 @@
 #!/usr/bin/env bash
 
-index=3
+index=1
+configuration=$(jq -c . <stubs/configuration.json)
+
+./install-custom-resource-definitions.sh "$index" "$configuration"
+
+index=4
 configuration=$(jq -c . <stubs/configuration.json)
 
 ./install-custom-resource-definitions.sh "$index" "$configuration"

.github/scripts/install-custom-resource-definitions.sh

@@ -3,7 +3,9 @@
 index="$1"
 json="$2"
 
-crds=($(echo "$json" | jq -r -c ".charts[$index].settings.kubernetes.customResourceDefinitions[]"))
+crdsStr=$(echo "$json" | jq -r -c ".charts[$index].settings.kubernetes.customResourceDefinitions[]")
+crds=()
+while IFS='' read -r line; do [[ -n "$line" ]] && crds+=("$line"); done < <(echo "$crdsStr")
 for crd in "${crds[@]}"; do
 	kubectl create -f "$crd"
 done