Dockerfile

FROM ubuntu:16.04

# Set correct environment variables.
ENV HOME /root
ENV PORT 2222
ENV HOSTNAME pair.dasapp.co

RUN apt-get update &&  apt-get install -y software-properties-common

# Use libssh 0.7 https://github.com/tmate-io/tmate/issues/82#issuecomment-216165761
RUN add-apt-repository ppa:kedazo/libssh-0.7.x

RUN apt-get update && \
    apt-get -y install git-core build-essential pkg-config libtool libevent-dev libncurses-dev zlib1g-dev automake libssh-dev cmake ruby  && \
    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Use the latest msgpack-c https://github.com/tmate-io/tmate/issues/82#issuecomment-216165761
RUN git clone https://github.com/msgpack/msgpack-c.git && \
    cd msgpack-c && \
    cmake . && \
    make && \
    make install && \
    cd ..
RUN git clone https://github.com/nviennot/tmate-slave.git /opt/tmate-slave
RUN cd /opt/tmate-slave && \
    ./create_keys.sh && \
    ./autogen.sh && \
    ./configure && \
    make && \
    echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen && \
    locale-gen && \
    ldconfig

# Add the project scripts
COPY . /opt/tmate-slave

WORKDIR /opt/tmate-slave

CMD ["./message.sh"]

#RUN mkdir /etc/service/tmate-slave
#ADD tmate-slave.sh /etc/service/tmate-slave/run

#RUN mkdir -p /etc/my_init.d
#ADD message.sh /etc/my_init.d/message.sh

message.sh

#!/bin/sh

DSA=`ssh-keygen -l -f /opt/tmate-slave/keys/ssh_host_dsa_key 2>&1 | cut -d\  -f 2`
RSA=`ssh-keygen -l -f /opt/tmate-slave/keys/ssh_host_rsa_key 2>&1 | cut -d\  -f 2`
ECDSA=`ssh-keygen -l -f /opt/tmate-slave/keys/ssh_host_ecdsa_key 2>&1 | cut -d\  -f 2`
echo Add this to your ~/.tmate.conf file
echo set -g tmate-server-host \"$HOSTNAME\"
echo set -g tmate-server-port \"$PORT\"
echo set -g tmate-server-rsa-fingerprint   \"$RSA\"
echo set -g tmate-server-dsa-fingerprint   \"$DSA\"
echo set -g tmate-server-ecdsa-fingerprint   \"$ECDSA\"
echo set -g tmate-identity \"\"              # Can be specified to use a different SSH key.

/opt/tmate-slave/tmate-slave -h $HOSTNAME -p $PORT