This package doesn't actually contain a configuration provider. It's rather an extension method on IConfigurationBuilder that uses Microsoft.Extensions.Configuration.Json under the hood.
By calling AddExtraJsonFiles(), the configuration builder loads JSON files located at paths pointed by the following config items:
- EXTRA_JSON_CONFIG_FILE
- EXTRA_JSON_CONFIG_FILE_0
- EXTRA_JSON_CONFIG_FILE_1
- EXTRA_JSON_CONFIG_FILE_2
- EXTRA_JSON_CONFIG_FILE_3
- ...
The extension always loads files EXTRA_JSON_CONFIG_FILE, EXTRA_JSON_CONFIG_FILE_0 and EXTRA_JSON_CONFIG_FILE_1. All other files are loaded if and only if the previous config item is specified (the file pointed by it doesn't necessary exist though).
This extension is handy when deploying applications in Docker Swarm mode and configuring them with Docker Configs. Instead of hard-coding config file paths, this extension allows paths to be specified at runtime.
The fastest way to install the package is via NuGet:
dotnet add package ConfigurationProvider.ExtraJsonFiles
Simply call the extension method on the IHostBuilder:
builder.AddExtraJsonFiles();