[Update] Viewer Dockerfile to .NET9

Author: samatstariongroup

Diff for: SysML2.NET.Serializer.Json.Tests/ApiSerializerTestFixture.cs

@@ -72,7 +72,7 @@ private void CreateTestData()
                 Created = new DateTime(1976, 8, 20),
                 Description = "",
                 OwningProject = Guid.Parse("9b0e1914-3241-461e-b9ee-a3ff5120de4e"),
-                PreviousCommits = null,
+                PreviousCommit = Guid.Empty,
                 ResourceIdentifier = "http://www.stariongroup.eu/commit",
             };
 

Diff for: SysML2.NET.Serializer.Json.Tests/DeSerializerTestFixture.cs

@@ -155,7 +155,7 @@ public void Verify_that_particular_project_and_commits_from_restapi_json_can_be_
 
                 var firstCommit = data.OfType<Commit>().Single(x => x.Id == Guid.Parse("6d7ad9fd-6520-4ff2-885b-8c5c129e6c27"));
                 Assert.That(firstCommit.OwningProject, Is.EqualTo(Guid.Parse("000e9890-6935-43e6-a5d7-5d7cac601f4c")));
-                Assert.That(firstCommit.PreviousCommits, Is.Null);
+                Assert.That(firstCommit.PreviousCommit, Is.EqualTo(Guid.Empty));
                 Assert.That(firstCommit.Description, Is.Null);
                 Assert.That(firstCommit.Created, Is.EqualTo(DateTime.Parse("2023-03-13T17:53:59.111354-04:00")));
             }
@@ -173,7 +173,7 @@ public void Verify_that_particular_project_and_particular_commit_from_restapi_js
 
                 var firstCommit = data.OfType<Commit>().Single(x => x.Id == Guid.Parse("6d7ad9fd-6520-4ff2-885b-8c5c129e6c27"));
                 Assert.That(firstCommit.OwningProject, Is.EqualTo(Guid.Parse("000e9890-6935-43e6-a5d7-5d7cac601f4c")));
-                Assert.That(firstCommit.PreviousCommits, Is.Null);
+                Assert.That(firstCommit.PreviousCommit, Is.EqualTo(Guid.Empty));
                 Assert.That(firstCommit.Description, Is.Null);
                 Assert.That(firstCommit.Created, Is.EqualTo(DateTime.Parse("2023-03-13T17:53:59.111354-04:00")));
             }

Diff for: SysML2.NET.Viewer/Dockerfile

@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 
 WORKDIR /src