shellspec/shellspec

FROM ubuntu:12.04
ENV DEBIAN_FRONTEND=noninteractive DEBCONF_NOWARNINGS=yes
RUN useradd -m user \
 && sed -i -e 's|//.*ubuntu.com/|//old-releases.ubuntu.com/|' /etc/apt/sources.list \
 && apt-get update && apt-get -y install ksh
ENV SH=/bin/ksh