Update Dockerfile

showservices/Dockerfile

-FROM python:3.8
+FROM python:3.8-alpine
 WORKDIR /
-COPY requirement.txt
-RUN pip install -r requirements.txt
-COPY ./movies.py /
+COPY stservice/requirements.txt .
+RUN pip3 install -r requirements.txt
+COPY ./showtimes.py /
 COPY ./database /database
-EXPOSE 5001 
-CMD["python3", "./movies.py"]
+EXPOSE 5002
+CMD python showtimes.py
+