diff --git a/images/linux/ubuntu1604.json b/images/linux/ubuntu1604.json
index ea02031d..133751f3 100644
--- a/images/linux/ubuntu1604.json
+++ b/images/linux/ubuntu1604.json
@@ -132,6 +132,7 @@
         {
             "type": "shell",
             "inline": [
+                "# This directory is supposed to be created in $HOME and owned by user(https://github.com/actions/virtual-environments/issues/491)",
                 "mkdir -p /etc/skel/.config/configstore",
                 "echo 'export XDG_CONFIG_HOME=$HOME/.config' | tee -a /etc/skel/.bashrc"
             ],
diff --git a/images/linux/ubuntu1804.json b/images/linux/ubuntu1804.json
index 420c2c0c..d96b8bea 100644
--- a/images/linux/ubuntu1804.json
+++ b/images/linux/ubuntu1804.json
@@ -135,6 +135,7 @@
         {
             "type": "shell",
             "inline": [
+                "# This directory is supposed to be created in $HOME and owned by user(https://github.com/actions/virtual-environments/issues/491)",
                 "mkdir -p /etc/skel/.config/configstore",
                 "echo 'export XDG_CONFIG_HOME=$HOME/.config' | tee -a /etc/skel/.bashrc"
             ],