Sporadic 403s (GitHub Actions, not codespaces)

[lol768]

May 28th 2026, 11:12AM BST:

ERROR: failed to build: failed to solve: mcr.microsoft.com/dotnet/aspnet:10.0: failed to resolve source metadata for mcr.microsoft.com/dotnet/aspnet:10.0: unexpected status from HEAD request to https://mcr.microsoft.com/v2/dotnet/aspnet/manifests/10.0: 403 Forbidden
Error: Process completed with exit code 1.

May 26th 2026, 5:41PM BST:

#2 [internal] load metadata for mcr.microsoft.com/dotnet/aspnet:10.0
#2 ERROR: unexpected status from HEAD request to https://mcr.microsoft.com/v2/dotnet/aspnet/manifests/10.0: 403 Forbidden
------
 > [internal] load metadata for mcr.microsoft.com/dotnet/aspnet:10.0:
------
Dockerfile:1
--------------------
   1 | >>> FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS runtime
   2 |     WORKDIR /app
   3 |     COPY out ./
--------------------
ERROR: failed to build: failed to solve: mcr.microsoft.com/dotnet/aspnet:10.0: failed to resolve source metadata for mcr.microsoft.com/dotnet/aspnet:10.0: unexpected status from HEAD request to https://mcr.microsoft.com/v2/dotnet/aspnet/manifests/10.0: 403 Forbidden

May 26th 2026, 11:05 AM BST:

#1 DONE 0.0s

#2 [internal] load metadata for mcr.microsoft.com/dotnet/aspnet:10.0
#2 ERROR: unexpected status from HEAD request to https://mcr.microsoft.com/v2/dotnet/aspnet/manifests/10.0: 403 Forbidden
------
 > [internal] load metadata for mcr.microsoft.com/dotnet/aspnet:10.0:
------
Dockerfile:1
--------------------
   1 | >>> FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS runtime
   2 |     WORKDIR /app
   3 |     COPY out ./
--------------------
ERROR: failed to build: failed to solve: mcr.microsoft.com/dotnet/aspnet:10.0: failed to resolve source metadata for mcr.microsoft.com/dotnet/aspnet:10.0: unexpected status from HEAD request to https://mcr.microsoft.com/v2/dotnet/aspnet/manifests/10.0: 403 Forbidden
Error: Process completed with exit code 1.

May 22nd 2026, 1:39 PM BST:

#1 [internal] load build definition from Dockerfile
#1 transferring dockerfile: 268B 0.0s done
#1 DONE 0.0s

#2 [internal] load metadata for mcr.microsoft.com/dotnet/aspnet:6.0
#2 ERROR: failed to copy: httpReadSeeker: failed open: unexpected status code https://mcr.microsoft.com/v2/dotnet/aspnet/blobs/sha256:e1be15e5336cd9623a0fdd20ccca189565db0d3b6edbddc5e7933dfdf0262157: 403 Forbidden
------
 > [internal] load metadata for mcr.microsoft.com/dotnet/aspnet:6.0:
------
Dockerfile:1
--------------------
   1 | >>> FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS runtime
   2 |     WORKDIR /app
   3 |     COPY out ./
--------------------
ERROR: failed to build: failed to solve: mcr.microsoft.com/dotnet/aspnet:6.0: failed to resolve source metadata for mcr.microsoft.com/dotnet/aspnet:6.0: failed to copy: httpReadSeeker: failed open: unexpected status code https://mcr.microsoft.com/v2/dotnet/aspnet/blobs/sha256:e1be15e5336cd9623a0fdd20ccca189565db0d3b6edbddc5e7933dfdf0262157: 403 Forbidden

Nothing on Azure status page. Why is it so unreliable? Is a rate limit being hit?