Files
Sylpheed/docker/port/Dockerfile
MechaCat02 c58196b795 containers: each agent clones the monorepo into its own volume
The last structural fix for the collision class that has bitten three times. Both
containers now clone the repository into their OWN named volume instead of
bind-mounting a human's working tree, so an agent's local git config cannot
capture a human's commits, a credential helper cannot leak a container-only path
onto the host, and a `git add -A` cannot sweep another party's in-flight files.

Cloned once at startup and never auto-pulled: pulling under a running agent
moves files out from under whatever it is mid-edit, which is the same bug again.

Accepted knowingly: Claude Code keys per-project memory off the working
directory, so moving off the host path starts that memory empty. The corpus in
docs/ is the memory that matters and it travels with the clone.

Other changes:
* docker/agent -> docker/decoder; the launcher is sylph-decoder. Roles, not
  "the agent", now that there is more than one.
* /reborn is gone -- one repository now, so the port reads HANDOFF from its own
  checkout rather than through a live read-only mount of someone else's tree.
* Canary mounts separately at /canary; it stays a fork tracking upstream.
* A shared `sylpheed-exchange` volume at /exchange, with tools/ on PATH so
  `share` is available in both.
* The decoder's credential file gets the .host-copy treatment the port already
  had -- `credential.helper=store` rewrites by rename-over-target, which is
  EBUSY on a bind mount and reports a fatal that is not one.
* Budget split deliberately: decoder 5 cpu / 6 GB, port 3 / 4, leaving room for
  the planned Referee. "Half the host" was right when there was one agent.

Prompts move to docs/agents/ and are rewritten around the protocol: the oracle
is the running game, dynamic RE stays with the decoder, each iteration must
attempt to refute one claim of the other, and neither may verify its way out of
its own role.
2026-08-29 11:48:30 +02:00

101 lines
5.0 KiB
Docker

# Autonomous port agent for the Sylpheed Godot menu shell.
#
# DELIBERATELY SMALL. The reverse-engineering container next door is 4.36 GB
# because it builds Xenia Canary and drives it under a software Vulkan stack.
# This agent has no emulator, no oracle and no C++ build: it converts already-
# decoded assets and drives Godot. Keeping it light is what lets both containers
# run on one 12-core / 15 GB box without the memory pressure that has crashed it.
#
# What it needs, and nothing else: Rust (the exporter), Godot 4 (the runtime),
# ffmpeg (the transcode), and a headless display to screenshot Godot for
# comparison against the reference renderer.
FROM ubuntu:24.04
ENV DEBIAN_FRONTEND=noninteractive \
LANG=C.UTF-8 \
TZ=Etc/UTC
RUN apt-get update && apt-get install -y --no-install-recommends \
# toolchain for the exporter and for building sylpheed-cli from /reborn
build-essential pkg-config git curl ca-certificates \
libssl-dev \
# Godot 4 needs these even headless; the windowed run needs the X libs
libx11-6 libxcursor1 libxinerama1 libxrandr2 libxi6 libgl1 \
libasound2t64 libpulse0 libfontconfig1 \
# the transcode target (libtheora + libvorbis ship in Ubuntu's ffmpeg)
ffmpeg \
# headless display + the screenshot path, for diffing Godot's output
# against `sylpheed-cli screen render`
xvfb x11-utils openbox imagemagick \
# everyday
python3 jq ripgrep unzip file less nano tini sudo procps \
# expect drives Claude Code's one-time interactive gates
expect \
&& rm -rf /var/lib/apt/lists/*
# ── Godot 4 ──────────────────────────────────────────────────────────────────
# Pinned. An engine version bump changes rendering, and this project compares
# screenshots against a reference renderer — so an upgrade must be a deliberate,
# stated act rather than a silent drift.
ARG GODOT_VERSION=4.7.2
RUN cd /tmp \
&& curl -fsSLO "https://github.com/godotengine/godot/releases/download/${GODOT_VERSION}-stable/Godot_v${GODOT_VERSION}-stable_linux.x86_64.zip" \
&& unzip -q "Godot_v${GODOT_VERSION}-stable_linux.x86_64.zip" \
&& mv "Godot_v${GODOT_VERSION}-stable_linux.x86_64" /usr/local/bin/godot \
&& chmod +x /usr/local/bin/godot \
&& printf '#!/bin/sh\nexec /usr/local/bin/godot --headless "$@"\n' > /usr/local/bin/godot-headless \
&& chmod +x /usr/local/bin/godot-headless \
&& rm -f "Godot_v${GODOT_VERSION}-stable_linux.x86_64.zip"
# ── Node + Claude Code ───────────────────────────────────────────────────────
RUN curl -fsSL https://deb.nodesource.com/setup_22.x | bash - \
&& apt-get install -y --no-install-recommends nodejs \
&& npm install -g @anthropic-ai/claude-code \
&& npm cache clean --force \
&& rm -rf /var/lib/apt/lists/*
# ── The agent user ───────────────────────────────────────────────────────────
# NOT root: Claude Code refuses --dangerously-skip-permissions with root
# privileges. Ubuntu 24.04 ships its own `ubuntu` account at uid 1000, so the
# common case — matching a host user who is also 1000 — collides with it.
ARG AGENT_UID=1000
ARG AGENT_GID=1000
RUN if getent passwd "${AGENT_UID}" >/dev/null; then \
userdel -r "$(getent passwd "${AGENT_UID}" | cut -d: -f1)" 2>/dev/null || true; \
fi; \
if getent group "${AGENT_GID}" >/dev/null; then \
groupdel "$(getent group "${AGENT_GID}" | cut -d: -f1)" 2>/dev/null || true; \
fi; \
groupadd -g "${AGENT_GID}" agent \
&& useradd -m -u "${AGENT_UID}" -g "${AGENT_GID}" -s /bin/bash -d /sylph-home/port agent \
&& mkdir -p /sylph-home/port /work /reborn \
&& chown -R "${AGENT_UID}:${AGENT_GID}" /sylph-home \
&& echo 'agent ALL=(ALL) NOPASSWD: ALL' > /etc/sudoers.d/agent
COPY bin/ /usr/local/bin/
COPY entrypoint.sh /usr/local/bin/entrypoint.sh
RUN chmod +x /usr/local/bin/* /usr/local/bin/entrypoint.sh
USER agent
WORKDIR /work
# CARGO_TARGET_DIR points OUTSIDE the bind-mounted repo so the host and the
# container do not invalidate each other's incremental state on every switch.
ENV RUSTUP_HOME=/sylph-home/port/.rustup \
CARGO_HOME=/sylph-home/port/.cargo \
CARGO_TARGET_DIR=/sylph-home/port/target-container \
PATH=/work/tools:/sylph-home/port/.cargo/bin:/usr/local/bin:/usr/bin:/bin
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs \
| sh -s -- -y --default-toolchain stable --profile minimal --component clippy --component rustfmt
RUN mkdir -p /sylph-home/port/target-container /sylph-home/port/.claude
ENV HOME=/sylph-home/port \
DISPLAY=:97 \
SCREEN_GEOMETRY=1280x720x24 \
PROJECT_DIR=/work
ENTRYPOINT ["/usr/bin/tini", "--", "/usr/local/bin/entrypoint.sh"]
CMD ["bash"]