61 lines
2.1 KiB
Docker
61 lines
2.1 KiB
Docker
# FlaskPaste Slim Container Image (Distroless)
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# Build: podman build -f Containerfile.slim -t flaskpaste:slim .
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# Run: podman run -d -p 5000:5000 -v flaskpaste-data:/app/data flaskpaste:slim
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#
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# Distroless: No shell, no package manager, minimal attack surface
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# For debugging, use the standard Containerfile instead
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# Stage 1: Build dependencies (identical to standard build)
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FROM python:3.11-slim AS builder
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WORKDIR /build
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# Install build dependencies
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RUN apt update && apt install -y --no-install-recommends gcc \
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&& apt clean && rm -rf /var/lib/apt/lists/*
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# Create virtual environment and upgrade pip
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RUN python -m venv /opt/venv
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ENV PATH="/opt/venv/bin:$PATH"
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RUN pip install --no-cache-dir --upgrade pip wheel
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# Install Python dependencies
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COPY requirements.txt .
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RUN pip install --no-cache-dir -r requirements.txt gunicorn \
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&& rm -rf /opt/venv/lib/python*/site-packages/setuptools/_vendor/jaraco.context*.dist-info
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# Stage 2: Distroless runtime
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FROM gcr.io/distroless/python3-debian12:nonroot
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LABEL maintainer="FlaskPaste"
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LABEL description="Minimal secure pastebin REST API (distroless)"
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WORKDIR /app
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# Copy virtual environment from builder
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# Note: distroless uses /usr/lib/python3.11 as base, venv provides all deps
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COPY --from=builder /opt/venv/lib/python3.11/site-packages /app/.local/lib/python3.11/site-packages
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# Copy application files (owned by nonroot user - uid 65532)
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COPY --chown=65532:65532 app/ ./app/
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COPY --chown=65532:65532 wsgi.py .
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COPY --chown=65532:65532 fpaste .
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# Environment configuration
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ENV PYTHONPATH="/app/.local/lib/python3.11/site-packages"
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ENV FLASK_ENV=production
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ENV FLASKPASTE_DB=/app/data/pastes.db
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ENV PYTHONUNBUFFERED=1
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ENV PYTHONDONTWRITEBYTECODE=1
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EXPOSE 5000
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# Healthcheck without shell (no || exit 1)
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HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
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CMD ["python", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:5000/health')"]
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# Run gunicorn directly via Python module
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ENTRYPOINT ["python", "-m", "gunicorn"]
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CMD ["--bind", "0.0.0.0:5000", "--workers", "2", "--access-logfile", "-", "wsgi:application"]
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