Files
maziggy e927ccefb1 feat(docker): Tailscale integration support via host socket mount
Add the Tailscale CLI to the production image and document how to
  enable Let's Encrypt cert provisioning for virtual printers from a
  Docker-deployed Bambuddy.

  - Dockerfile installs `tailscale` from the official Debian repo. Only
    the CLI is used at runtime; tailscaled itself stays on the host.
    The binary is harmless if the socket isn't mounted — the code logs
    an actionable hint and falls back to self-signed certs.
  - docker-compose.yml adds a commented-out volume mount for
    /var/run/tailscale/tailscaled.sock with inline setup instructions.
  - tailscale.py's docker-socket hint now also fires when the binary is
    present but the daemon socket is unreachable (i.e. the new Docker
    pattern), not just when the binary is missing, so users get the
    actionable "mount the socket" message instead of opaque CLI stderr.

  Enabling the integration on a Docker host:
    1. `curl -fsSL https://tailscale.com/install.sh | sh` on host
    2. `sudo tailscale up`
    3. `sudo tailscale set --operator=<user>` for the container PUID
    4. Uncomment the tailscaled.sock mount in docker-compose.yml
    5. `docker compose up -d --force-recreate`
    6. Flip the Tailscale toggle on the VP card
2026-04-24 12:01:22 +02:00

107 lines
4.0 KiB
Docker

# Build frontend
FROM node:22-bookworm-slim AS frontend-builder
WORKDIR /app/frontend
# Copy package files first for better caching
COPY frontend/package*.json ./
# Use cache mount for npm
RUN --mount=type=cache,target=/root/.npm \
npm ci
COPY frontend/ ./
RUN npm run build
# Production image
FROM python:3.13-slim-trixie
WORKDIR /app
# Install system dependencies
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y --no-install-recommends \
curl \
ffmpeg \
gnupg \
iproute2 \
libcap2-bin \
openssh-client \
&& rm -rf /var/lib/apt/lists/*
# Install the Tailscale CLI only (no tailscaled — the daemon runs on the host).
# Bambuddy calls `tailscale status` / `tailscale cert` via the host's socket,
# which the user mounts in via docker-compose when they want to enable the
# Tailscale integration for virtual printers. Without the socket mount, the
# binary is harmless — the code logs a hint and falls back to self-signed.
RUN curl -fsSL https://pkgs.tailscale.com/stable/debian/trixie.noarmor.gpg \
-o /usr/share/keyrings/tailscale-archive-keyring.gpg \
&& curl -fsSL https://pkgs.tailscale.com/stable/debian/trixie.tailscale-keyring.list \
-o /etc/apt/sources.list.d/tailscale.list \
&& apt-get update && apt-get install -y --no-install-recommends tailscale \
&& rm -rf /var/lib/apt/lists/*
# Allow binding to privileged ports (e.g. 990/FTPS) as non-root user.
# File capabilities are more reliable than Docker cap_add with user: directive,
# which depends on ambient capability support in the container runtime.
RUN setcap cap_net_bind_service=+ep "$(readlink -f /usr/local/bin/python3)"
# Install Python dependencies with cache mount
COPY requirements.txt ./
RUN --mount=type=cache,target=/root/.cache/pip \
pip install --root-user-action=ignore -r requirements.txt
# Copy backend
COPY backend/ ./backend/
# Capture the current git branch at build time. `.git/HEAD` is the only
# .git metadata the build context lets through (see .dockerignore); it
# contains `ref: refs/heads/<branch>`, which the SpoolBuddy remote-update
# flow reads at runtime via detect_current_branch() in spoolbuddy_ssh.py.
# Without this, the production image has no git metadata at all and would
# always pull `main` on the remote device regardless of which branch
# Bambuddy itself was built from.
COPY .git/HEAD ./.git/HEAD
# Copy built frontend from builder stage
COPY --from=frontend-builder /app/static ./static
# Create data directory for persistent storage
# chmod 777 allows running as non-root user (e.g., with docker compose user: directive)
RUN mkdir -p /app/data /app/logs && chmod 777 /app/data /app/logs
# Environment variables
ENV PYTHONUNBUFFERED=1
ENV DATA_DIR=/app/data
ENV LOG_DIR=/app/logs
ENV PORT=8000
# Provide a local username + home for tools that call getpass.getuser() /
# os.path.expanduser() under arbitrary PUIDs. With `user: "1001:1001"` the
# stock python:3.13-slim image has no /etc/passwd entry for that UID, so
# pwd.getpwuid() raises and breaks libraries that do host-level user lookups
# (notably asyncssh, which uses the local username for ~/.ssh/config host
# matching during the SpoolBuddy remote-update flow). Setting LOGNAME/USER
# makes getpass.getuser() resolve via env vars instead of the passwd db;
# HOME=/app gives a writable home that is guaranteed to exist.
ENV HOME=/app
ENV USER=bambuddy
ENV LOGNAME=bambuddy
EXPOSE 322
EXPOSE 990
EXPOSE 3000
EXPOSE 3002
EXPOSE 6000
EXPOSE 8000
EXPOSE 8883
EXPOSE 50000-50100
# Health check (uses PORT env var via shell)
HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
CMD python -c "import urllib.request, os; urllib.request.urlopen(f'http://localhost:{os.environ.get(\"PORT\", \"8000\")}/health')" || exit 1
# Run the application
# Use standard asyncio loop (uvloop has permission issues in some Docker environments)
# Port is configurable via PORT environment variable (default: 8000)
CMD ["sh", "-c", "uvicorn backend.app.main:app --host 0.0.0.0 --port ${PORT:-8000} --loop asyncio"]