Update Dockerfile

Dockerfile

@@ -2,7 +2,11 @@ FROM python:3.9-slim
 
 WORKDIR /code
 
-COPY . /code/
+COPY ./requirements.txt /code/requirements.txt
+COPY ./api.py /code/api.py
+COPY ./json_parser.py /code/json_parser.py
+COPY ./logger_config.py /code/logger_config.py
+COPY ./response_formatter.py /code/response_formatter.py
 
 RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt