fix wsgi.py;

added entrypoint.sh as django entrypoint;
install and use gunicorn as prod server;

backend/Dockerfile

@@ -1,21 +1,21 @@
-FROM python:3.8-slim
+FROM        python:3.8-slim
+ENV         PYTHONUNBUFFERED 1
+ENV         PATH="/opt/venv/bin:$PATH"
 
-ENV PYTHONUNBUFFERED 1
+RUN         apt-get update; \
+            apt-get install -y build-essential gcc; \
+            python -m venv /opt/venv; \
+            python -m pip install --upgrade pip; \
+            mkdir /code;
 
-RUN apt-get update; \
-    apt-get install -y build-essential gcc; \
-    python -m venv /opt/venv; \
-    python -m pip install --upgrade pip;
+WORKDIR     /code
 
-ENV PATH="/opt/venv/bin:$PATH"
+COPY        setup.py /code/
+COPY        requirements.txt /code/
 
-RUN mkdir /code
+RUN         pip install -r requirements.txt
 
-WORKDIR /code
+COPY        . /code/
 
-COPY setup.py /code/
-COPY requirements.txt /code/
-
-RUN pip install -r requirements.txt
-
-COPY . /code/
+RUN			chmod 777 scripts/entrypoint.sh
+ENTRYPOINT  ["scripts/entrypoint.sh"]