import { type SshTarget } from './types.js';
import type { RegistryCredential } from '../launch/types.js';
/**
 * Build Docker config.json content from registry credential entries.
 */
export declare function buildDockerConfigJson(credentials: RegistryCredential[]): string;
/**
 * Write a scoped Docker config.json to the remote host via SSH stdin pipe.
 * Creates <remotePath>/.docker/config.json with mode 0600.
 */
export declare function writeRemoteDockerConfig(target: SshTarget, remotePath: string, credentials: RegistryCredential[]): void;
/**
 * Remove the scoped Docker config from the remote host.
 * Idempotent — tolerates missing file/directory.
 */
export declare function cleanupRemoteDockerConfig(target: SshTarget, remotePath: string): void;
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