Refactor Dockerfile and entrypoint script; add Makefile for build and test commands

Dockerfile

@@ -4,14 +4,9 @@ ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1
 WORKDIR /app
 
-RUN adduser -D -S app
-
 COPY requirements.txt /app/
 RUN apk --no-cache update && apk --no-cache upgrade
-RUN apk add --no-cache --virtual .build-deps build-base mariadb-dev libffi-dev \
-    && apk add --no-cache mariadb-connector-c \
-    && pip install --no-cache-dir -r requirements.txt \
-    && apk del .build-deps
+RUN pip install --no-cache-dir -r requirements.txt 
 
 COPY . /app/
 RUN chmod +x /app/entrypoint.sh
@@ -21,8 +16,4 @@ EXPOSE 8000
 RUN mkdir -pv /fonts
 COPY tienda/static/fonts/ /fonts/
 
-RUN chown -R app: /app /fonts
-RUN chmod 770 /app/entrypoint.sh
-USER app
-
 ENTRYPOINT ["/bin/sh", "/app/entrypoint.sh"]