[CHORES] Add Dockerfile and compose file

Dockerfile

+# BUILDER
+
+FROM python:3.7-slim as builder
+
+RUN apt-get update \
+    && apt-get -y upgrade \
+    && apt-get -y install --no-install-recommends gcc python3-dev libpq-dev \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /usr/src/app
+
+ENV PYTHONDONTWRITEBYTECODE 1
+ENV PYTHONUNBUFFERED 1
+
+COPY . .
+RUN pip wheel --no-cache-dir --no-deps --wheel-dir /usr/src/app/wheels -r requirements.txt
+
+# FINAL
+
+FROM python:3.7-slim
+
+RUN apt-get update \
+    && apt-get -y upgrade \
+    && apt-get -y install --no-install-recommends gcc python3-dev libpq-dev
+
+RUN mkdir -p /home/digipus
+ENV APP_HOME=/home/digipus/
+RUN mkdir $APP_HOME/staticfiles
+RUN mkdir $APP_HOME/mediafiles
+WORKDIR $APP_HOME
+
+COPY . .
+
+COPY --from=builder /usr/src/app/wheels /wheels
+COPY --from=builder /usr/src/app/requirements.txt .
+RUN pip install --no-cache /wheels/*
+
+EXPOSE 8000
+VOLUME ["/home/digipus/staticfiles", "/home/digipus/mediafiles"]
+CMD ["gunicorn", "--bind", "0.0.0.0:8000", "digipus.wsgi:application", "--reload"]

docker-compose.yml

+version: "3.7"
+
+services:
+  digipus:
+    build: .
+    env_file:
+      - .env
+    ports:
+    - 8000:8000
+    depends_on:
+      - db
+  db:
+    image: postgres:12
+    volumes:
+    - postgres_data:/var/lib/postgresql/data/
+    - static_volume:/home/digipus/staticfiles
+    - media_volume:/home/digipus/mediafiles
+    env_file:
+      - .env.db
+
+volumes:
+  postgres_data:
+  static_volume:
+  media_volume: