Run Telegram in a container - docker build -t infoslack/telegram .

Dockerfile

# Run container
#
# docker run -v /tmp/.X11-unix:/tmp/.X11-unix \
#     -v $(pwd)/.telegram:/root/Downloads/Telegram \
#     -e DISPLAY=unix$DISPLAY \
#     infoslack/telegram
#
FROM ubuntu:14.04
MAINTAINER Daniel Romero <infoslack@gmail.com>

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

RUN add-apt-repository ppa:atareao/telegram && \
    apt-get update && apt-get install -y \
        telegram \
        libx11-6 \
        libx11-xcb1 \
        gconf-service && \
    rm -rf /var/lib/apt/lists/*

VOLUME [ "/root/Downloads/Telegram" ]
ENTRYPOINT [ "/opt/telegram/Telegram", "-noupdate" ]

Doesn't have the audio setting =(