create cookies using the addCors service in Api project

ConfigureServices:

services.AddControllers();
services.AddDbContext(options =>
options.UseSqlServer(Configuration.GetConnectionString("Database")));

services.AddIdentity()
.AddEntityFrameworkStores()
.AddDefaultTokenProviders();

services.ConfigureApplicationCookie(options =>
{
options.Cookie.Domain = "http://localhost";
options.Cookie.Name = ".AspNet.SharedCookie";
options.Cookie.Path = "/";
});

services.AddCors(options =>
{
options.AddPolicy(name: "ReactChat",
builder =>
{
builder.AllowAnyMethod()
.WithOrigins("http://localhost:3000")
.AllowAnyHeader()
.AllowCredentials();
});

});

services.AddSignalR();

Controller:

[HttpPost("login")]
public async Task Login(LoginDto dto)
{

string newGuid = Guid.NewGuid().ToString();
HttpContext.Response.Cookies.Append("Login", newGuid, new CookieOptions
{
SameSite = SameSiteMode.None,
Domain = "http://localhost/"
//HttpOnly = false
}); ;
return Ok();

}