# syntax=docker/dockerfile:1

# ---- Build stage -------------------------------------------------------------
# Python 3.14 / Alpine 3.24 base. uv is copied from its official image because
# there is no combined python3.14-alpine3.24 uv image tag.
FROM python:3.14-alpine3.24 AS builder
COPY --from=ghcr.io/astral-sh/uv:0.13.1 /uv /uvx /bin/

# setuptools-scm derives the package version from git history and tags.
RUN apk add --no-cache git

ENV UV_COMPILE_BYTECODE=1 \
    UV_LINK_MODE=copy \
    UV_PYTHON_DOWNLOADS=never

WORKDIR /app

# Dependencies first: this layer only rebuilds when pyproject.toml/uv.lock change.
COPY pyproject.toml uv.lock .python-version ./
RUN --mount=type=cache,target=/root/.cache/uv \
    uv sync --frozen --no-dev --no-install-project

# Then install the project itself. The full checkout (including .git) is
# copied so setuptools-scm sees a clean worktree and derives the version
# from the closest release tag.
COPY . .
RUN --mount=type=cache,target=/root/.cache/uv \
    uv sync --frozen --no-dev --no-editable

# ---- Runtime stage -----------------------------------------------------------
FROM python:3.14-alpine3.24 AS runtime

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PATH="/app/.venv/bin:$PATH" \
    MCP_TRANSPORT=http \
    MCP_HOST=0.0.0.0 \
    MCP_PORT=8000

RUN addgroup -S -g 1001 xmcp \
 && adduser -S -D -H -u 1001 -G xmcp xmcp

WORKDIR /app
COPY --from=builder --chown=xmcp:xmcp /app/.venv /app/.venv

USER xmcp

EXPOSE 8000

# In HTTP mode, probe the MCP port; stdio containers are always healthy.
HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
    CMD ["python", "-c", "import os, socket, sys\nif os.environ.get('MCP_TRANSPORT', 'stdio') != 'http':\n    sys.exit(0)\ns = socket.socket()\ns.settimeout(3)\nsys.exit(s.connect_ex(('127.0.0.1', int(os.environ.get('MCP_PORT', '8000')))))"]

CMD ["python", "-m", "xmcp"]