import { SoftwareEnvironment } from '@stencila/schema';
import Generator from './Generator';
import IUrlFetcher from './IUrlFetcher';
/**
 * A Dockerfile generator that collects instructions from
 * all the other generators to allow for images that support
 * multiple languages.
 */
export default class DockerGenerator extends Generator {
    /**
     * The software environment for which a Dockerfile
     * will be generated
     */
    environ: SoftwareEnvironment;
    /**
     * The child generators from which this 'super' generator
     * collects instructions.
     */
    protected generators: Array<Generator>;
    constructor(urlFetcher: IUrlFetcher, environ: SoftwareEnvironment, folder?: string);
    /**
     * Collect arrays of string from each child generator
     * and flatten them into an array of strings.
     * Used below for method overrides.
     *
     * @param func The child generator method to call
     */
    private collect;
    /**
     * Join strings from each child generator
     *
     * @param func The child generator method to call
     */
    private join;
    applies(): boolean;
    baseVersion(): string;
    envVars(sysVersion: string): Array<[string, string]>;
    aptKeysCommand(sysVersion: string): string | undefined;
    aptRepos(sysVersion: string): Array<string>;
    aptPackages(sysVersion: string): Array<string>;
    stencilaInstall(sysVersion: string): string | undefined;
    installFiles(sysVersion: string): Array<[string, string]>;
    installCommand(sysVersion: string): string | undefined;
    projectFiles(sysVersion: string): Array<[string, string]>;
    runCommand(sysVersion: string): string | undefined;
}