<PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="10.0.3" />

Microsoft.Extensions.Configuration.EnvironmentVariables.EnvironmentVariablesConfigurationSource

public class EnvironmentVariablesConfigurationSource : IConfigurationSource
Represents environment variables as an IConfigurationSource.
public string Prefix { get; set; }

A prefix used to filter environment variables.

public EnvironmentVariablesConfigurationSource()

public IConfigurationProvider Build(IConfigurationBuilder builder)

Builds the EnvironmentVariablesConfigurationProvider for this source.