Initial Dosh implementation

packaging/docker/ssh-bench.Dockerfile

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+FROM ubuntu:24.04
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends openssh-server ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN useradd -m -s /bin/sh bench \
+    && mkdir -p /var/run/sshd /home/bench/.ssh /home/bench/.local/bin \
+    && chown -R bench:bench /home/bench/.ssh /home/bench/.local
+
+COPY dosh-server dosh-auth /usr/local/bin/
+COPY bench_authorized_keys /home/bench/.ssh/authorized_keys
+
+RUN chmod 0755 /usr/local/bin/dosh-server /usr/local/bin/dosh-auth \
+    && chmod 0700 /home/bench/.ssh \
+    && chmod 0600 /home/bench/.ssh/authorized_keys \
+    && chown bench:bench /home/bench/.ssh/authorized_keys
+
+EXPOSE 22/tcp 50000/udp
+
+CMD ["/bin/sh", "-lc", "su - bench -c 'nohup /usr/local/bin/dosh-server serve >/tmp/dosh-server.log 2>&1 &' && exec /usr/sbin/sshd -D -e"]

packaging/install.sh

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+#!/usr/bin/env sh
+set -eu
+
+repo_root="$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)"
+cd "$repo_root"
+exec sh ./install.sh --from-current "$@"

packaging/systemd/dosh-server.service

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+[Unit]
+Description=dosh dormant shell server
+Documentation=file:README.md file:SPEC.md
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+ExecStart=%h/.local/bin/dosh-server serve
+Restart=on-failure
+RestartSec=1
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=read-only
+ReadWritePaths=%h/.config/dosh %h/.local/share/dosh
+RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX
+RestrictRealtime=true
+LockPersonality=true
+MemoryDenyWriteExecute=true
+
+[Install]
+WantedBy=default.target