refs #17115 [master-v5] quote keys when accessing parsed json

devops/docker/env/entrypoint.sh

@@ -29,8 +29,8 @@ mkdir -p "$DIR"; chown "$UIDGID" $DIR/.. $DIR
 JSON=$(spruce merge $(find docker-env.*.yml) | spruce json)
 for KEY in $(echo "$JSON" | jq -r 'keys | join(" ")'); do
   FILE="$DIR/$KEY"; [ -f "$FILE" ] && rm "$FILE"
-  for VAR in $(echo "$JSON" | jq -r ".$KEY | keys | join(\" \")"); do
-    VAL=$(echo "$JSON" | jq -r ".$KEY.$VAR")
+  for VAR in $(echo "$JSON" | jq -r ".\"$KEY\" | keys | join(\" \")"); do
+    VAL=$(echo "$JSON" | jq -r ".\"$KEY\".\"$VAR\"")
     echo "$VAR=$(quote "$VAL")" >> "$FILE"
   done
   chown "$UIDGID" $FILE