Enable test execution in a Debian container

Author: Jason Zhai

.vsts-ci.yml

@@ -69,7 +69,7 @@ extends:
       centosStream9:
         image: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream9
       debian12Amd64:
-        image: mcr.microsoft.com/dotnet-buildtools/prereqs:debian-12-gcc14-amd64
+        image: mcr.microsoft.com/dotnet-buildtools/prereqs:debian-12-gcc15-amd64
       fedora39:
         image: mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-39
       mariner20CrossArm:

.vsts-pr.yml

@@ -32,7 +32,7 @@ resources:
   - container: centosStream9
     image: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream9
   - container: debian12Amd64
-    image: mcr.microsoft.com/dotnet-buildtools/prereqs:debian-12-gcc14-amd64
+    image: mcr.microsoft.com/dotnet-buildtools/prereqs:debian-12-gcc15-amd64
   - container: fedora39
     image: mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-39
   - container: ubuntu2204DebPkg

eng/pipelines/templates/jobs/sdk-job-matrix.yml

@@ -52,9 +52,7 @@ parameters:
     container: debian12Amd64
     helixTargetContainer: $(helixTargetContainerPrefix)debian-11-helix-amd64
     osProperties: /p:OSName=linux /p:BuildSdkDeb=true
-    # Skipping all container-based testing for now.
-    # See: https://github.com/dotnet/sdk/issues/40935
-    runTests: false
+    runTests: true
   - categoryName: ContainerBased
     container: alpine319WithNode
     helixTargetContainer: $(helixTargetContainerPrefix)alpine-3.18-helix-amd64

test/Microsoft.NET.TestFramework/EnvironmentInfo.cs

@@ -101,6 +101,13 @@ public static bool SupportsTargetFramework(string targetFramework)
                         return false;
                     }
                 }
+                else if (osId.Equals("debian", StringComparison.OrdinalIgnoreCase))
+                {
+                    if (nugetFramework.Version < new Version(2, 0, 0, 0))
+                    {
+                        return false;
+                    }
+                }
                 else if (Version.TryParse(versionString, out Version? osVersion))
                 {
                     if (osId.Equals("fedora", StringComparison.OrdinalIgnoreCase))

test/dotnet.Tests/CommandTests/Workload/Restore/GivenDotnetWorkloadRestore.cs

@@ -60,6 +60,6 @@ public void ProjectsThatDoNotSupportWorkloadsAndAreTransitivelyReferencedDoNotBr
 
     private bool IsRunningInContainer()
     {
-        return File.Exists("/.dockerenv") && RuntimeInformation.OSDescription.Contains("Ubuntu");
+        return File.Exists("/.dockerenv") && (RuntimeInformation.OSDescription.Contains("Ubuntu") || RuntimeInformation.OSDescription.Contains("Debian"));
     }
 }