Dockerfile

FROM debian:jessie

RUN apt-get update && \
  apt-get install -y --no-install-recommends telnet dnsutils vim bzip2 ca-certificates curl wget git && \
  rm -rf /var/lib/apt/lists/*

ENV GOSU_VERSION 1.9
RUN set -x \
    && dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')" \
    && wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch" \
    && wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc" \
    && export GNUPGHOME="$(mktemp -d)" \
    && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
    && gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
    && rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc \
    && chmod +x /usr/local/bin/gosu \
    && gosu nobody true

COPY bashrc /root/.bashrc