DEV-153 adding dockerfile for the buil of docker image

DOCKER/Dockerfile

+# syntax=docker/dockerfile:1
+
+FROM python:3.8-slim-buster
+
+WORKDIR /app
+
+COPY requirements.txt /app/requirements.txt
+
+RUN pip3 install -r /app/requirements.txt
+
+COPY ../webapp /app/.
+COPY ../sq_project_list.py /app/.
+COPY ../sq_webapp.py /app/.
+COPY ../config.py /app/.
+
+CMD ["python3", "-m" , "flask", "run", "--host=0.0.0.0"]
+