fix: infinity loop fork bomb on nested helm-git calls (#189)

Author: metajiji

helm-git-plugin.sh

@@ -125,8 +125,20 @@ helm_package() {
 helm_dependency_update() {
   _target_path=$1
 
-  # shellcheck disable=SC2086
-  "$HELM_BIN" dependency update $helm_args --skip-refresh "$_target_path" >/dev/null
+  # Prevent infinity loop when calling helm-git plugin
+  if [ "$HELM_GIT_DEPENDENCY_CIRCUITBREAKER" = 1 ]; then
+    # shellcheck disable=SC2086
+    "$HELM_BIN" dependency update $helm_args --skip-refresh "$_target_path" >/dev/null
+    ret=$?
+  else
+    # shellcheck disable=SC2086
+    "$HELM_BIN" dependency update $helm_args "$_target_path" >/dev/null
+    ret=$?
+    export HELM_GIT_DEPENDENCY_CIRCUITBREAKER=1
+  fi
+
+  # forward return code
+  return $ret
 }
 
 # helm_index(target_path, base_url)