1FROM ubuntu:20.04
 2EXPOSE 8080
 3RUN apt-get -y update && \
 4apt-get install -y \
 5     curl \
 6     tmux \
 7     iproute2 \
 8     iputils-ping \
 9     openssh-client \
10     vim \
11     nano \
12     screen \
13     tcpdump && \
14VERSION=v1.0.1 && \
15curl -sLk https://github.com/yudai/gotty/releases/download/$VERSION/gotty_linux_amd64.tar.gz \
16| tar xzC /usr/local/bin && \
17apt-get purge --auto-remove -y curl && \
18apt-get clean && \
19rm -rf /var/lib/apt/lists* 
20ENV TERM=xterm-256color
21ENTRYPOINT ["/usr/local/bin/gotty"]
22CMD ["--permit-write","--reconnect","/usr/bin/tmux","new","-A","-s","gotty"]
23