# Fellowship code-server IDE
# Extends codercom/code-server with:
#   - Docker CLI + Compose v2 plugin (so students can run docker compose from the IDE terminal)
#   - Pre-installed VS Code extensions (Python, Playwright, Copilot, Jupyter, Prettier)
#   - Runtime entrypoint that aligns the docker group GID with the host socket

FROM codercom/code-server:latest

USER root

# ── System packages ──────────────────────────────────────────────────────────
# docker.io provides the Docker CLI (client only); the daemon runs on the host.
# gosu is used in the entrypoint to drop privileges cleanly back to coder.
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        docker.io \
        gosu \
        curl \
        git \
    && rm -rf /var/lib/apt/lists/*

# ── Docker Compose v2 plugin ─────────────────────────────────────────────────
# Install as a CLI plugin AND as a standalone binary so both
#   `docker compose ...`  and  `docker-compose ...`  work from the terminal.
RUN mkdir -p /usr/local/lib/docker/cli-plugins && \
    curl -fsSL \
        "https://github.com/docker/compose/releases/download/v2.27.0/docker-compose-linux-x86_64" \
        -o /usr/local/lib/docker/cli-plugins/docker-compose && \
    chmod +x /usr/local/lib/docker/cli-plugins/docker-compose && \
    ln -sf /usr/local/lib/docker/cli-plugins/docker-compose /usr/local/bin/docker-compose && \
    ln -sf /usr/local/lib/docker/cli-plugins/docker-compose /usr/local/bin/docker compose || true

# Make the CLI plugin available to the coder user too
RUN mkdir -p /home/coder/.docker/cli-plugins && \
    ln -sf /usr/local/lib/docker/cli-plugins/docker-compose \
           /home/coder/.docker/cli-plugins/docker-compose && \
    chown -R coder:coder /home/coder/.docker

# ── Docker group ─────────────────────────────────────────────────────────────
# Pre-create the docker group with GID 999 (common default).
# The entrypoint will re-align the GID at runtime to match the host socket.
RUN groupadd -g 999 docker 2>/dev/null || groupmod -g 999 docker 2>/dev/null || true && \
    usermod -aG docker coder

# ── Runtime entrypoint ───────────────────────────────────────────────────────
COPY entrypoint.sh /usr/bin/fellowship-docker-init.sh
RUN chmod +x /usr/bin/fellowship-docker-init.sh

# Run as root initially so the entrypoint can fix group GIDs.
# The entrypoint drops back to 'coder' via gosu before starting code-server.
USER root

ENTRYPOINT ["/usr/bin/fellowship-docker-init.sh"]