Big rename: separate concepts of Transaction from Handle. - An application that uses PAM creates a Transaction. - The Transaction has a Handle. Currently, a module still get something called a "handle", but that's probably going to change soon.

FROM docker.io/debian:stable

RUN apt-get -y update \
    && apt-get -y upgrade \
    && apt-get install -y cargo mercurial wget build-essential \
    && apt-get clean