import type { DockerContainerConfig, DockerContainerExecArgs, DockerContainerExecResult } from "./dockerTypes.js";
/**
 * Facade for per-user long-lived Docker sandbox containers.
 * Expects: callers pass stable userId + hostHomeDir for each execution.
 */
export declare class DockerContainers {
    private readonly clientsBySocket;
    private readonly ensureInFlight;
    exec(config: DockerContainerConfig, args: DockerContainerExecArgs): Promise<DockerContainerExecResult>;
    private dockerClientResolve;
    private containerEnsure;
}
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