Add guide for setting up Django development with Docker + VSC

[xingjian-zhang]

This pull request adds a comprehensive guide for setting up a Python and Django development environment using Docker and Visual Studio Code. The guide includes detailed steps for installation, configuration, and troubleshooting.

Dockerfile

FROM python:3.9-slim

# Start with /app for installation steps
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    python3-dev \
    git \
    wget \
    unzip \
    openssh-client \
    && rm -rf /var/lib/apt/lists/*

# Install GitHub CLI (gh)
RUN mkdir -p -m 755 /etc/apt/keyrings \
    && wget -O- https://cli.github.com/packages/githubcli-archive-keyring.gpg | tee /etc/apt/keyrings/githubcli-archive-keyring.gpg > /dev/null \
    && chmod go+r /etc/apt/keyrings/githubcli-archive-keyring.gpg \
    && echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | tee /etc/apt/sources.list.d/github-cli.list > /dev/null \
    && apt-get update \
    && apt-get install -y gh \
    && rm -rf /var/lib/apt/lists/*

# Install ngrok
RUN wget https://bin.equinox.io/c/bNyj1mQVY4c/ngrok-v3-stable-linux-amd64.tgz -O ngrok.tgz && \
    tar -xvzf ngrok.tgz -C /usr/local/bin && \
    rm ngrok.tgz

# Install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code into the container
# This replaces the volume mount approach
COPY . .

# Remove the non-root user setup and stay as root
# Set working directory to home directory of root user
WORKDIR /root

# Set Python to run in unbuffered mode
ENV PYTHONUNBUFFERED=1

# Default command
CMD ["bash"]

Docker Image

https://hub.docker.com/r/xingjianzhang/dj4e