Pin the version from Testcontainers to 3.7.0 in WireMock.Net.Testcontainers (#1057)

* TestcontainersTests

* WireMockContainer_Build_and_StartAsync_and_StopAsync

* --

* [3.7.0]

test/WireMock.Net.Tests/Testcontainers/TestcontainersTests.cs

@@ -0,0 +1,43 @@
+#if NET6_0_OR_GREATER
+using System.Threading.Tasks;
+using FluentAssertions;
+using FluentAssertions.Execution;
+using WireMock.Net.Testcontainers;
+using Xunit;
+
+namespace WireMock.Net.Tests.Testcontainers;
+
+public class TestcontainersTests
+{
+    [Fact]
+    public async Task WireMockContainer_Build_and_StartAsync_and_StopAsync()
+    {
+        // Act
+        var wireMockContainer = new WireMockContainerBuilder()
+            .WithAutoRemove(true)
+            .WithCleanUp(true)
+            .Build();
+
+        try
+        {
+            await wireMockContainer.StartAsync().ConfigureAwait(false);
+
+            // Assert
+            using (new AssertionScope())
+            {
+                var url = wireMockContainer.GetPublicUrl();
+                url.Should().NotBeNullOrWhiteSpace();
+
+                var adminClient = wireMockContainer.CreateWireMockAdminClient();
+
+                var settings = await adminClient.GetSettingsAsync();
+                settings.Should().NotBeNull();
+            }
+        }
+        finally
+        {
+            await wireMockContainer.StopAsync();
+        }
+    }
+}
+#endif