phase 0

2026-06-17 16:03:26 -05:00
parent fa1e9b68c7
commit c1abe36822
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+# STEP Parser — Phase 0 CLI container
+#
+# Goal: prove the heavy native stack runs on linux/amd64 (Unraid target):
+#   - CAD kernel        build123d → cadquery-ocp (OpenCASCADE)
+#   - offscreen render  pyrender via OSMesa (software GL, no GPU needed)
+#   - diagram export    cairosvg (cairo / pango)
+#
+# Build for Unraid (x86_64) even from an arm64 Mac (uses QEMU emulation):
+#   docker buildx build --platform linux/amd64 -t step-parser:dev --load .
+# or just: ./build.sh  (build.sh passes --platform linux/amd64)
+FROM python:3.11-slim-bookworm
+
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PIP_NO_CACHE_DIR=1 \
+    # Force pyrender/PyOpenGL onto the software rasterizer — no GPU on Unraid.
+    PYOPENGL_PLATFORM=osmesa
+
+# System libraries grouped by which dependency needs them:
+#   OpenCASCADE / OCP runtime  : libgl1 libglu1-mesa X11 libs fontconfig libgomp1
+#   pyrender offscreen (OSMesa): libosmesa6
+#   cairosvg                   : libcairo2 libpango* libgdk-pixbuf libffi8
+RUN apt-get update && apt-get install -y --no-install-recommends \
+      libgl1 \
+      libglu1-mesa \
+      libosmesa6 \
+      libxrender1 \
+      libxext6 \
+      libsm6 \
+      libx11-6 \
+      libxi6 \
+      libfontconfig1 \
+      libglib2.0-0 \
+      libgomp1 \
+      libcairo2 \
+      libpango-1.0-0 \
+      libpangocairo-1.0-0 \
+      libgdk-pixbuf-2.0-0 \
+      libffi8 \
+      ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY requirements.txt .
+# pyrender hard-pins PyOpenGL==3.1.0, but the OSMesa offscreen backend needs
+# OSMesaCreateContextAttribs, which only exists in PyOpenGL >=3.1.5. Install
+# pyrender's pin first, then force-upgrade PyOpenGL (--no-deps leaves pyrender
+# itself untouched, avoiding the resolver conflict).
+RUN pip install --upgrade pip \
+ && pip install -r requirements.txt \
+ && pip install --no-deps --upgrade "PyOpenGL==3.1.7"
+
+# The skill source lives in skill.src/ in the repo root; copy it into the image.
+# step_processor.py adds its own dir to sys.path[0], so `import modules` resolves
+# regardless of the working directory.
+COPY skill.src ./skill.src
+
+# Generated artifacts (xlsx, png, svg, _EN.step) are written next to the input
+# STEP file. Mount a host directory here and process files inside it.
+VOLUME ["/data"]
+
+ENTRYPOINT ["python", "skill.src/step_processor.py"]
+CMD ["--help"]