dockerfile.run

gksu

graphical front-end to su and sudo

Debian

RUN apt-get update && \
    apt-get install -y gksu

Ubuntu

RUN apt-get update && \
    apt-get install -y gksu

Raspbian

RUN apt-get update && \
    apt-get install -y gksu

click the source code to copy install gksu on any operating system with command-not-found.com