export interface DockerfilePrewarmStage {
    stage: string;
    copySource: string | undefined;
    monitoredPort: number | undefined;
    envPort: number | undefined;
}
export interface ParseDockerfilePrewarmOptions {
    copySourcePrefix?: string;
    prewarmBinary?: string;
    prewarmPortEnv?: string;
}
export declare function parseDockerfilePrewarmStages(dockerfile: string, { copySourcePrefix, prewarmBinary, prewarmPortEnv, }?: ParseDockerfilePrewarmOptions): DockerfilePrewarmStage[];