new feature: container

config.json

@@ -67,8 +67,9 @@
         "type":"dialog",
         "uri":"www/parser/tutorials/change-database.md"
       },
-      "embed-in-code":{
+      "docker":{"type":"dialog"},
-        "title":"embed in code","text":"{x12} Import Library","type":"dialog","uri":"www/parser/tutorials/embed-in-code.md"
+      "import-library":{
+        "title":"Import Library","text":"Import Library","type":"dialog","uri":"www/parser/tutorials/import-library.md"
       },
       "export-data":{"title":"Export Data","text":"Export Data","type":"dialog","uri":"www/parser/tutorials/export-data.md"},
       "credit": {