add chat template.

tokenizer_config.json

@@ -40,5 +40,6 @@
   "spaces_between_special_tokens": false,
   "tokenizer_class": "LlamaTokenizer",
   "unk_token": "<unk>",
-  "use_default_system_prompt": true
+  "use_default_system_prompt": true,
+  "chat_template": "{%- if messages[0]['role'] == 'system' %}\n    {%- set system_message = messages[0]['content'] %}\n    {%- set loop_messages = messages[1:] %}\n{%- else %}\n    {%- set loop_messages = messages %}\n{%- endif %}\n\n{{- bos_token }}\n{%- for message in loop_messages %}\n    {%- if (message['role'] == 'user') != (loop.index0 % 2 == 0) %}\n        {{- raise_exception('After the optional system message, conversation roles must alternate user/assistant/user/assistant/...') }}\n    {%- endif %}\n    {%- if loop.first and system_message is defined %}\n            {{- ' ### System:\n ' + system_message + '\n' }}\n           {%- endif %}\n     {%- if message['role'] == 'user' %}\n  {{- ' ### User:\n ' + message['content'] + ' \n' }}\n       {%- elif message['role'] == 'assistant' %}\n        {{- ' ### Assistant:\n ' + message['content'] + eos_token + '\n'}}\n    {%- else %}\n        {{- raise_exception('Only user and assistant roles are supported, with the exception of an initial optional system message!') }}\n    {%- endif %}\n{%- endfor %}{% if add_generation_prompt %}{{ ' ### Assistant:\n' }}{% endif %}\n"
 }