# Docs MCP server — production image.
#
# Structure: copy code first, then the regenerable indexes last so a
# code-only change doesn't invalidate the corpus COPY layer.
#
# The container runs the MCP server via streamable-http on PORT 8000.
# Override via MCP_HOST / MCP_PORT env if you front it with a different
# reverse-proxy setup.

FROM python:3.12-slim

WORKDIR /app

# Install Python deps first for cacheability.
COPY requirements.txt /app/
RUN pip install --no-cache-dir -r requirements.txt

# Code.
COPY scrape /app/scrape
COPY rag /app/rag
COPY docs_mcp /app/docs_mcp

# Catalog. Written by the scraper at CI time.
COPY bundles.json /app/

# Regenerable indexes. CI builds these from corpus/ in the same job
# that builds the image. Listed last so code changes don't invalidate
# the COPY layer cache for these (much larger) directories.
#
# bm25/ is only consulted when HYBRID_SEARCH=true (the server falls
# back to dense-only if it's missing).
COPY corpus /app/corpus
COPY chroma /app/chroma
COPY bm25 /app/bm25

ENV PYTHONUNBUFFERED=1 \
    MCP_TRANSPORT=streamable-http \
    MCP_HOST=0.0.0.0 \
    MCP_PORT=8000

EXPOSE 8000

ENTRYPOINT ["python", "-m", "docs_mcp.server"]