ci: try to use private s3 for artifacts

[xxchan]

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What's changed and what's your intention?

[codecov]

Codecov Report

Merging #7870 (edb4157) into main (45b5e6b) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #7870      +/-   ##
==========================================
- Coverage   71.67%   71.66%   -0.01%     
==========================================
  Files        1111     1111              
  Lines      176936   176936              
==========================================
- Hits       126812   126807       -5     
- Misses      50124    50129       +5     

Flag	Coverage Δ
rust	71.66% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/object_store/src/object/mem.rs	86.48% <0.00%> (-0.78%)	⬇️
src/storage/src/hummock/sstable_store.rs	64.57% <0.00%> (-0.32%)	⬇️
src/storage/src/hummock/compactor/iterator.rs	97.95% <0.00%> (-0.30%)	⬇️
src/object_store/src/object/mod.rs	51.19% <0.00%> (-0.22%)	⬇️
src/stream/src/executor/aggregation/minput.rs	96.24% <0.00%> (-0.11%)	⬇️
src/common/src/cache.rs	97.26% <0.00%> (+0.10%)	⬆️
src/storage/src/hummock/compactor/mod.rs	80.85% <0.00%> (+0.19%)	⬆️

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[xxchan]

Traffic between Amazon EC2 and Amazon S3 can leverage up to 100 Gbps of bandwidth to VPC endpoints and public IPs in the same Region.

🤔

Not as fast as I thought (91b6043)

---

buildkite s3 is 32s/19s (BTW this is found after splitting the log for docker-compose. The docker start also takes 10+s)

[xxchan]

1.6GB 12s 🤔

slightly decreased to 8s after setting max_concurrent_requests to 20, but no further improvements

[xxchan]

cc @huangjw806 Do you have any ideas about the results? Is it possible to be even faster? (looks too slow to me) 🤔

buildkite s3 is 32s/19s

This seems good enough, but if we can finish in 1s it will also be very cool 🥵

[xxchan]

help! i need somebody help!