Optimized Docker build to fix OOM errors

Dockerfile

@@ -16,7 +16,8 @@ ENV MAX_JOBS=1
 # Install nvdiffrast (CUDA rasterizer) - needs GPU, build here
 RUN git clone --depth 1 https://github.com/NVlabs/nvdiffrast.git /tmp/nvdiffrast \
     && cd /tmp/nvdiffrast \
-    && python3 -m pip install . --no-use-pep517 --no-build-isolation --no-deps \
+    && python3 setup.py install \
+    && python3 - <<'PY'\nimport sysconfig\nfrom pathlib import Path\nsite = Path(sysconfig.get_paths()[\"purelib\"])\ndist = site / \"nvdiffrast-0.0.0.dist-info\"\ndist.mkdir(exist_ok=True)\n(dist / \"METADATA\").write_text(\"Metadata-Version: 2.1\\nName: nvdiffrast\\nVersion: 0.0.0\\n\")\n(dist / \"WHEEL\").write_text(\"Wheel-Version: 1.0\\nGenerator: manual\\nRoot-Is-Purelib: false\\nTag: py3-none-any\\n\")\n(dist / \"top_level.txt\").write_text(\"nvdiffrast\\n\")\n(dist / \"RECORD\").write_text(\"\")\nPY \
     && python3 -c "import nvdiffrast.torch" \
     && rm -rf /tmp/nvdiffrast