chore: Move usings to global file

Author: HofmeisterAn

tests/Testcontainers.Platform.Linux.Tests/PauseUnpauseTest.cs

@@ -1,6 +1,3 @@
-using Docker.DotNet;
-using Xunit.Sdk;
-
 namespace Testcontainers.Tests;
 
 public sealed class PauseUnpauseTest : IAsyncLifetime
@@ -31,13 +28,10 @@ await _container.UnpauseAsync()
             .ConfigureAwait(true);
         Assert.Equal(TestcontainersStates.Running, _container.State);
     }
-    
+
     [Fact]
-    public async Task Unpauses_NotPaused_ContainerSuccessfully()
+    public Task UnpausingRunningContainerThrowsDockerApiException()
     {
-        var thrown = await Assert.ThrowsAsync<DockerApiException>(async () => await _container.UnpauseAsync().ConfigureAwait(true));
-        
-        Assert.Equal(HttpStatusCode.InternalServerError, thrown.StatusCode);
-        Assert.Equal($"Docker API responded with status code=InternalServerError, response={{\"message\":\"Container {_container.Id} is not paused\"}}\n", thrown.Message);
+        return Assert.ThrowsAsync<DockerApiException>(() => _container.UnpauseAsync());
     }
 }

tests/Testcontainers.Platform.Linux.Tests/Usings.cs

@@ -8,6 +8,7 @@
 global using System.Text;
 global using System.Threading;
 global using System.Threading.Tasks;
+global using Docker.DotNet;
 global using Docker.DotNet.Models;
 global using DotNet.Testcontainers;
 global using DotNet.Testcontainers.Builders;