public Startup(IConfiguration configuration)
{
Configuration = configuration;
var db_host = Environment.GetEnvironmentVariable("DB_HOST");
var db_name = Environment.GetEnvironmentVariable("DB_NAME");
var db_user = Environment.GetEnvironmentVariable("DB_USER");
var db_pass = Environment.GetEnvironmentVariable("DB_PASS");
var db_port = Environment.GetEnvironmentVariable("DB_PORT");
var coneccionModificada = ConfigurationExtensions.GetConnectionString(Configuration, "Coneccion").Replace("DB_HOST", db_host).Replace("DB_PORT", db_port).Replace("DB_NAME", db_name).Replace("DB_USER", db_user).Replace("DB_PASS", db_pass);
DBConexion.AgregarConexiones("ConneccionDB", coneccionModificada);
}