Remove Debian 11 (bullseye) from CI pipeline — EOL

[richlander]

An org-wide audit of the dotnet org against the .NET supported OS matrix found several references to EOL OS versions in pipeline definitions.

Part of .NET OS Support Tracking. See also: dotnet/runtime#125690, dotnet/dotnet-buildtools-prereqs-docker#1605.

Tracking

• test_debian_11_amd64 — prereqs:debian-11-amd64 → prereqs:debian-13-amd64 (Debian 11 EOL June 2024)
• test_linux_musl_x64 — prereqs:alpine-3.19-WithNode → prereqs:alpine-3.23-helix-amd64 (Alpine 3.19 EOL Nov 2024; -WithNode variant retired)
• test_fedora — prereqs:fedora-41 → prereqs:fedora-43 (Fedora 41 EOL)
• test_opensuse — prereqs:opensuse-15.2-helix-amd64 → prereqs:opensuse-16.0-helix-amd64 (openSUSE 15.2 EOL Dec 2021)

Details

Container image definitions

diagnostics/eng/pipelines/pipeline-resources.yml

Line 78 in bc1b058

image: mcr.microsoft.com/dotnet-buildtools/prereqs:debian-11-amd64

diagnostics/eng/pipelines/pipeline-resources.yml

Line 74 in bc1b058

image: mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.19-WithNode

diagnostics/eng/pipelines/pipeline-resources.yml

Line 82 in bc1b058

image: mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-41

diagnostics/eng/pipelines/pipeline-resources.yml

Line 86 in bc1b058

image: mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.2-helix-amd64

Test matrix references

diagnostics/diagnostics.yml

Line 258 in bc1b058

name: Debian_Bullseye

diagnostics/diagnostics.yml

Line 240 in bc1b058

name: Alpine3_19

diagnostics/diagnostics.yml

Line 273 in bc1b058

name: Fedora_39

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This issue was generated by GitHub Copilot CLI v1.0.7 via the update-supported-os skill.