# Use an official Debian base image
FROM debian:stable-slim

# Set environment variables to avoid prompts during installation
ENV DEBIAN_FRONTEND=noninteractive

# Install required packages
RUN apt-get update && \
    apt-get install -y \
    git \
    openssh-server \
    && rm -rf /var/lib/apt/lists/*

# Create a new user (replace 'git' with your desired username)
RUN useradd -m -s /usr/bin/git-shell git && \
    mkdir -p /home/git/.ssh && \
    chown -R git:git /home/git/.ssh

# Set up SSH
# COPY sshd_config /etc/ssh/sshd_config
RUN echo "PermitRootLogin no" >> /etc/ssh/sshd_config && \
    echo "PasswordAuthentication no" >> /etc/ssh/sshd_config && \
    echo "ChallengeResponseAuthentication no" && \
    echo "UsePAM no" >> /etc/ssh/sshd_config && \
    echo "Subsystem git /usr/lib/git-core/git-shell"

# Expose SSH port
EXPOSE 22

RUN ln -sf /home/git/data/archive /archive

COPY gitserver.entrypoint.sh /entrypoint.sh

# Start SSH server
CMD ["/bin/bash", "/entrypoint.sh"]