docker: Pin to single-core and enable pigz #13
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This PR significantly accelerates Docker image pulls through two optimizations:
Testing with
python:latest(300MB) on an 8-core CVM:Original time:
1m30sWith pigz:
1mWith single-core pinning:
18spulling
kvin/cuda-notebook(10GB):15m43.078s->3m18.380s