UMBRA/backend/Dockerfile
Kyle Pope c986028f51 Multi-stage Dockerfile: remove gcc/psql from runtime image (PT-11)
Convert to two-stage build: builder stage installs gcc and compiles
Python C extensions, runtime stage copies only the installed packages.
Removes gcc and postgresql-client from the production image, reducing
attack surface. postgresql-client was unused (healthchecks use urllib).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-02 17:43:43 +08:00

35 lines
1.2 KiB
Docker

# ── Build stage: compile C extensions ──────────────────────────────────
FROM python:3.12-slim AS builder
WORKDIR /build
RUN apt-get update && apt-get install -y --no-install-recommends \
gcc \
&& rm -rf /var/lib/apt/lists/*
COPY requirements.txt .
RUN pip install --no-cache-dir --prefix=/install -r requirements.txt
# ── Runtime stage: lean production image ───────────────────────────────
FROM python:3.12-slim
WORKDIR /app
# Copy pre-built Python packages from builder
COPY --from=builder /install /usr/local
# Copy application code
COPY . .
# Create non-root user
RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
USER appuser
EXPOSE 8000
# Run migrations and start server
# --no-server-header: suppresses uvicorn version disclosure
# --proxy-headers: reads X-Forwarded-Proto/For from reverse proxy so redirects use correct scheme
# --forwarded-allow-ips '*': trusts proxy headers from any IP (nginx is on Docker bridge network)
CMD ["sh", "-c", "alembic upgrade head && uvicorn app.main:app --host 0.0.0.0 --port 8000 --no-server-header --proxy-headers --forwarded-allow-ips '*'"]