GitHub actions are failing with 429 Too Many Requests

[kbarnes3]

Describe the bug
Azure Static Web app pipelines are failing with a rate limiting error when the Azure/static-web-apps-deploy image internally tries to pull mcr.microsoft.com/appsvc/staticappsclient:stable.

A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Trigger a build from a GitHub repo that uses Static Web Apps.
2. Example run: https://github.com/kbarnes3/base-angular-app/actions/runs/27579135390/job/81538013548

  #2 [internal] load metadata for mcr.microsoft.com/appsvc/staticappsclient:stable
  #2 ERROR: failed to authorize: failed to fetch anonymous token: unexpected status from GET request to https://mcrprod.azurecr.io/oauth2/token?scope=repository%3Aappsvc%2Fstaticappsclient%3Apull&service=mcrprod.azurecr.io: 429 Too Many Requests
  ------
   > [internal] load metadata for mcr.microsoft.com/appsvc/staticappsclient:stable:
  ------
  Dockerfile:1
  --------------------
     1 | >>> FROM mcr.microsoft.com/appsvc/staticappsclient:stable
     2 |     COPY entrypoint.sh /entrypoint.sh
     3 |     ENTRYPOINT ["sh", "/entrypoint.sh"]
  --------------------
  ERROR: failed to build: failed to solve: mcr.microsoft.com/appsvc/staticappsclient:stable: failed to resolve source metadata for mcr.microsoft.com/appsvc/staticappsclient:stable: failed to authorize: failed to fetch anonymous token: unexpected status from GET request to https://mcrprod.azurecr.io/oauth2/token?scope=repository%3Aappsvc%2Fstaticappsclient%3Apull&service=mcrprod.azurecr.io: 429 Too Many Requests

Expected behavior
Actions run and publish a web app if there are no errors

Screenshots
N/A

Device info (if applicable):
N/A

Additional context
The same repo was producing new versions of the static web app yesterday evening

[ascasson]

+1 Same issue appeared within the past few hours

[michaeltnguyen]

Likely related, in azure devops we're getting

docker: Error response from daemon: Head "https://mcr.microsoft.com/v2/appsvc/staticappsclient/manifests/stable": no basic auth credentials.

If I recall correctly, this used to be a public (un-auth'd endpoint).

[ascasson]

@kbarnes3 It looks like things are pulling again, no more errors.