optimized build on docker

Dockerfile

@@ -1,17 +1,30 @@
-FROM pypy:3.10
-
+# Builder stage
+FROM pypy:3.10 AS builder
 
+# Install dependencies for Rust and Python build requirements
 RUN apt-get update && apt-get install -y \
     curl \
     build-essential \
     libssl-dev \
     pkg-config \
+    gcc \
     && rm -rf /var/lib/apt/lists/*
 
+# Install Rust and Cargo
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
 ENV PATH="/root/.cargo/bin:${PATH}"
 RUN rustc --version && cargo --version
 
+# Set work directory
+WORKDIR /usr/src/app
+
+# Upgrade pip and install Python dependencies into a virtual environment
+RUN pip install --upgrade pip
+COPY ./requirements.txt .
+RUN pip install -r requirements.txt
+
+# Final stage (runtime)
+FROM pypy:3.10
 
 # Set environment variables
 ENV PYTHONDONTWRITEBYTECODE 1
@@ -20,31 +33,18 @@ ENV PYTHONUNBUFFERED 1
 # Set work directory
 WORKDIR /usr/src/app
 
-RUN apt update && apt install gcc
-
-
-# RUN apt-get update && \
-#     apt-get install -y --no-install-recommends \
-#     build-essential \
-#     gcc \
-#     libpq-dev \
-#     libc-dev \
-#     netcat-traditional \
-#     && apt-get clean && \
-#     rm -rf /var/lib/apt/lists/*
+# Install GCC
+RUN apt update && apt install -y gcc
 
+# Copy installed Python packages from builder stage
+COPY --from=builder /opt/pypy/lib/pypy3.10/site-packages /opt/pypy/lib/pypy3.10/site-packages
 
-RUN pip install --upgrade pip
-COPY ./requirements.txt .
-RUN pip install -r requirements.txt
-
+# Link pypy3 to python
 RUN ln -s /usr/local/bin/pypy3 /usr/local/bin/python
 
-
-# Copy project
+# Copy project files
 COPY ./src .
 COPY ./start.sh .
 COPY ./celery.sh .
 
-
 # RUN pypy3 manage.py collectstatic --noinput