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# syntax=docker/dockerfile:1
# ── Stage 1: Python dependency builder ──────────────────────────────────────
# Use the same slim variant as the runtime to keep Python versions in sync.
# build-essential + libffi-dev cover the few packages (e.g. cryptography) that
# need a C compiler; they are discarded after this stage.
FROM python:3.14.3-slim AS builder
WORKDIR /build
RUN apt-get update && apt-get install -y --no-install-recommends \
build-essential \
libffi-dev \
&& rm -rf /var/lib/apt/lists/*
# Create an isolated virtual environment so only installed packages are copied
# to the runtime image (no pip, setuptools, or other builder artefacts).
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH" \
PYTHONDONTWRITEBYTECODE=1 \
PIP_NO_CACHE_DIR=1
COPY requirements.txt /build/
RUN pip install --no-cache-dir -r requirements.txt \
# Remove bytecode and cache to keep the venv lean
&& find /opt/venv -type f -name "*.pyc" -delete \
&& find /opt/venv -type d -name "__pycache__" -exec rm -rf {} + 2>/dev/null || true
# ── Stage 2: Frontend asset builder ─────────────────────────────────────────
# Compiles Tailwind CSS (a devDependency) into the minified styles.css.
# npm ci installs ALL deps (including devDependencies) so the tailwindcss CLI
# is available; using --omit=dev would cause 'tailwindcss: not found'.
FROM node:20-slim AS frontend-builder
WORKDIR /frontend
COPY frontend/package.json frontend/package-lock.json ./
RUN npm ci
COPY frontend/ ./
RUN npm run build
# ── Stage 4: Documentation builder ──────────────────────────────────────────
FROM python:3.14.3-slim AS docs-builder
WORKDIR /docs
# Install MkDocs Material and its dependencies
COPY docs/requirements.txt /docs/requirements.txt
RUN pip install --no-cache-dir -r requirements.txt
# Copy documentation sources
COPY docs /docs/docs
COPY mkdocs.yml /docs/mkdocs.yml
# Build the static documentation site
RUN mkdocs build --config-file /docs/mkdocs.yml --site-dir /docs/docs_build
# ── Stage 5: Runtime image ───────────────────────────────────────────────────
FROM python:3.14.3-slim
WORKDIR /app
# Copy only the pre-built virtual environment from the builder
COPY --from=builder /opt/venv /opt/venv
# Install system-level OCR tools required for local OCR workflows:
# tesseract-ocr OCR engine used by pytesseract and ocrmypdf
# ghostscript required by ocrmypdf for PDF/PS operations
# poppler-utils provides pdfinfo/pdftoppm used by pdf2image
# unpaper optional deskewing pre-processor used by ocrmypdf
# wget used by ocr_language_manager to download tessdata files
RUN apt-get update && apt-get install -y --no-install-recommends \
tesseract-ocr \
ghostscript \
poppler-utils \
unpaper \
wget \
&& apt-get clean && rm -rf /var/lib/apt/lists/*
# Copy application code
COPY ./app /app/app
COPY ./frontend /app/frontend
COPY ./migrations /app/migrations
COPY ./alembic.ini /app/alembic.ini
COPY ./LICENSE /app/LICENSE
# Copy build metadata files (generated at build time)
COPY ./VERSION /app/VERSION
COPY ./BUILD_DATE /app/BUILD_DATE
COPY ./GIT_SHA /app/GIT_SHA
COPY ./RUNTIME_INFO /app/RUNTIME_INFO
# Copy the pre-built MkDocs documentation site (served at /help)
COPY --from=docs-builder /docs/docs_build /app/docs_build
# Copy the compiled Tailwind CSS (built in the frontend-builder stage)
COPY --from=frontend-builder /frontend/static/styles.css /app/frontend/static/styles.css
# Create necessary runtime directories in a single layer
RUN mkdir -p /app/runtime_info /workdir
# Set environment variables
ENV PATH="/opt/venv/bin:$PATH" \
PYTHONPATH=/app \
PYTHONUNBUFFERED=1 \
PYTHONDONTWRITEBYTECODE=1
# Expose the port the app runs on
EXPOSE 8000
# Default command
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]