[CACHE] 503 on chunk upload

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Describe the bug
On cache post, I got a 503 error or unavailable keys for restoring.
I'm using it to save .npm caches and cypress install but it doesn't works.

To Reproduce
Steps to reproduce the behavior:
A. Run a job into a container, in my case: container: cypress/browsers:node12.18.3-chrome89-ff86

1. uses cypress-io/github-action@v2 with a github/cache@v2 before.
2. Wait until the end
3. Check output: Warning: uploadChunk (start: 67108864, end: 100663295) failed: Cache service responded with 503

Expected behavior
A clear and concise description of what you expected to happen.

• The upload who would pass.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: Self-hosted runner: Current runner version: '2.277.1' on Ubuntu
• Version: @v2

Additional context
Add any other context about the problem here.

2021-04-08T16:44:04.8306990Z ##[group]Run actions/cache@v2
2021-04-08T16:44:04.8307543Z with:
2021-04-08T16:44:04.8308036Z   path: ~/.cache/Cypress
build
node_modules

2021-04-08T16:44:04.8309737Z   key: Linux-node_modules-build-fc9e2ae169dbc48149296a3ad67254c72829aeb2c10852070989fa5e64e6b57b
2021-04-08T16:44:04.8311518Z   restore-keys: Linux-node_modules-build-

2021-04-08T16:44:04.8312106Z ##[endgroup]
2021-04-08T16:44:04.8318995Z ##[command]/usr/bin/docker exec  126bceacdfce55bb92d76e05069ef34770cfb40d8d40104790e52f0b8dba6cd3 sh -c "cat /etc/*release | grep ^ID"
2021-04-08T16:44:05.8125878Z Cache not found for input keys: Linux-node_modules-build-fc9e2ae169dbc48149296a3ad67254c72829aeb2c10852070989fa5e64e6b57b, Linux-node_modules-build-

2021-04-08T16:50:24.0259093Z [warning]uploadChunk (start: 67108864, end: 100663295) failed: Cache service responded with 503

Start by reviewing the actions/cache@v2 workflow and the logged uploadChunk operation, using the provided Cypress container and self-hosted Ubuntu runner details to reproduce the failure. Compare the cache-post and restore-key behavior around the reported 503 response; done means the chunk upload completes and the saved cache can be restored without unavailable keys.