Experiment with setting up system test docker services

tests/WebApi.Tests.System/SharedTestContext.cs

@@ -0,0 +1,11 @@
+namespace WebApi.Tests.System;
+
+public sealed class SharedTestContext : IDisposable
+{
+	public DockerComposeFixture2 DockerComposeFixture { get; set; } = new();
+
+	public void Dispose()
+	{
+		DockerComposeFixture.Dispose();
+	}
+}