FROM ubuntu:20.04

RUN DEBIAN_FRONTEND="noninteractive" apt-get update && apt-get -y install tzdata

RUN apt-get update \

  && apt-get install -y ssh \

      build-essential \

      gcc \

      g++ \

      gdb \

      clang \

      make \

      ninja-build \

      cmake \

      autoconf \

      automake \

      locales-all \

      dos2unix \

      rsync \

      tar \

      python \

  && apt-get clean

RUN ( \

    echo 'LogLevel DEBUG2'; \

    echo 'PermitRootLogin yes'; \

    echo 'PasswordAuthentication yes'; \

    echo 'Subsystem sftp /usr/lib/openssh/sftp-server'; \

  ) > /etc/ssh/sshd_config_test_clion \

  && mkdir /run/sshd

RUN useradd -m user \

  && yes password | passwd user

RUN usermod -s /bin/bash user

CMD ["/usr/sbin/sshd", "-D", "-e", "-f", "/etc/ssh/sshd_config_test_clion"]

# Build and run:

docker build -t clion/remote-cpp-env:0.5 -f Dockerfile.remote-cpp-env .

docker run -d --cap-add sys_ptrace -p 127.0.0.1:2222:22 --name clion_remote_env clion/remote-cpp-env:0.5

ssh-keygen -f "$HOME/.ssh/known_hosts" -R "[localhost]:2222"

# stop:

docker stop clion_remote_env

# ssh credentials (test user):

user@password