Lo uso per "tradurre" DATABASE_URL in una stringa di connessione
var databaseUrl = Environment.GetEnvironmentVariable("DATABASE_URL");
var databaseUri = new Uri(databaseUrl);
var userInfo = databaseUri.UserInfo.Split(':');
var builder = new NpgsqlConnectionStringBuilder
{
Host = databaseUri.Host,
Port = databaseUri.Port,
Username = userInfo[0],
Password = userInfo[1],
Database = databaseUri.LocalPath.TrimStart('/')
};
return builder.ToString();