ConvertEnvironment converts the []Environment to "key=val" strings.

ConvertEnvironmentToDocker converts the []Environment into Dockerfile format.

GetEnvironment gets the .sti/environment file located in the sources and parse it into []environment.

NewDownloader creates an instance of the default Downloader implementation.

NewHTTPReader creates an instance of the HttpURLReader.

NewInstaller returns a new instance of the default Installer implementation.

Environment represents a single environment variable definition.

FileURLReader opens a specified file and returns its stream.

HttpURLReader retrieves a response from a given http(s) URL.

ImageReader just returns information the URL is from inside the image.

Downloader downloads the specified URL to the target file location.

Installer interface is responsible for installing scripts needed to run the build.