Refactor: optimize Dockerfile with multi-stage build and python 3.11

Dockerfile

@@ -1,36 +1,51 @@
-FROM python:3.8-alpine
+FROM python:3.11-alpine AS builder
 
-RUN mkdir /app
 WORKDIR /app
 
-RUN apk add --update \
+
+RUN apk add --no-cache \
     build-base \
     jpeg-dev \
     zlib-dev \
     postgresql-dev \
-    gettext \
-    bash \
-    zip \
-    unzip \
-    git \
-	nano \
-	vim
+    gcc \
+    musl-dev \
+    python3-dev
 
-ENV LIBRARY_PATH=/lib:/usr/lib
+COPY requirements.txt .
 
-ENV PYTHONUNBUFFERED 1
-ENV DJANGO_SETTINGS_MODULE website.settings.docker
 
-COPY requirements.txt .
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir gunicorn && \
+    pip wheel --no-cache-dir --no-deps --wheel-dir /app/wheels -r requirements.txt
+
+
+FROM python:3.11-alpine
+
+WORKDIR /app
+
+
+RUN apk add --no-cache \
+    libpq \
+    jpeg-dev \
+    zlib-dev \
+    gettext \
+    bash
+
+
+COPY --from=builder /app/wheels /wheels
+COPY --from=builder /app/requirements.txt .
+RUN pip install --no-cache /wheels/*
 
-RUN pip install -r requirements.txt && \
-    pip install gunicorn
 
 COPY . .
 
+
 RUN git clone https://github.com/metucclub/docker-scripts && \
-  	mv docker-scripts/*.sh . && \
-  	rm -rf docker-scripts && \
-	mkdir -p ./db
+    mv docker-scripts/*.sh . && \
+    rm -rf docker-scripts && \
+    mkdir -p ./db && \
+    chmod a+x *.sh
 
-RUN chmod a+x backup-data.sh restore-data.sh docker-wait-for-it.sh
+ENV PYTHONUNBUFFERED 1
+ENV DJANGO_SETTINGS_MODULE website.settings.docker