ci: pull CI images from the domestic mirror on self-hosted runners - #7762
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ci: pull CI images from the domestic mirror on self-hosted runners#7762Critsium-xy wants to merge 1 commit into
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The self-hosted runner pools give every job a fresh pod, so no Docker
layer cache is ever reused: in 37 consecutive CUDA jobs, 37 distinct
runner pods pulled all 17 layers cold ("Already exists" never appears).
Every GPU run therefore pays a full 3.98 GB pull from ghcr.io, which
takes 8.7 min at best.
When the link degrades, the two nvidia/cuda base layers (2343 MB and
1099 MB, together 86% of the image) hit connection failures and restart
from scratch, since a failed blob download is not resumed. Job
91378883548 retried them 5 and 4 times respectively and spent 39m09s in
docker pull alone, which is the whole of its 41-minute
"Initialize containers" step.
registry.dp.tech is the Aliyun (cn-zhangjiakou) mirror already published
by devcontainer.yml. It is anonymously pullable and serves an identical
digest, so no credentials are needed and the images are unchanged:
abacus-cuda resolves to sha256:499d7bdc7f9f..., the same digest ghcr.io
returned in the pull log above.
Only workflows on self-hosted runners are switched. Those on
ubuntu-latest (ase_plugin_test, build_test_cmake, build_test_makefile,
pytest) keep ghcr.io, which is the fast path from GitHub-hosted runners.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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