eShopOnContainers/src/Services/Ordering/Ordering.API/settings.json

{
  //"ConnectionString": "Server=tcp:ordering.data;Database=Microsoft.eShopOnContainers.Services.OrderingDb;User Id=sa;Password=Pass@word;"
  "ConnectionString": "Server=tcp:127.0.0.1,5432;Database=Microsoft.eShopOnContainers.Services.OrderingDb;User Id=sa;Password=Pass@word;"
}