appsettings.json

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },

  "ConnectionStrings": {
    "db": "Server=db;Database=FileDb; User ID=sa;Password=p@ssw0rd;"
  },
  "Serilog": {
    "Using": [ "Serilog.Sinks.File" ],
    "MinimumLevel": {
      "Default": "Debug",
      "Override": {
        "Microsoft": "Warning",
        "System": "Warning"
      }
    },
    "WriteTo": [
      {
        "Name": "File",
        "Args": {
          "path": "logs/ExcelUpload.txt",
          "rollingInterval": "Day",
          "outputTemplate": "{Timestamp} [{Level:u3}] {SourceContext} {Message}{NewLine}{Exception}"
        }
      },
      {
        "Name": "Console",
        "Args": {
          "theme": "Serilog.Sinks.SystemConsole.Themes.AnsiConsoleTheme::Code, Serilog.Sinks.Console",
          "outputTemplate": "[{Timestamp:HH:mm:ss} {Level:u3}] {SourceContext} {Message:lj} {NewLine}{Exception}"
        }
      }
    ]    
  },

  "AllowedHosts": "*"
}