HealthCheckMiddleware.cs

public void Configure(
            IApplicationBuilder app,
            IHostingEnvironment env)
{
    app.UseHealthChecks("/health/status",
        new HealthCheckOptions
        {
            ResponseWriter = async (httpContext, healthReport) =>
            {
                var healthReportJson = JsonConvert.SerializeObject(healthReport);
                await httpContext.Response.WriteAsync(
                    healthReportJson, Encoding.UTF8);
            }
        });            
		
	// rest of the pipeline
}