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base/erlang/with-ssh/27.3.2/Dockerfile

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+FROM erlang:27.3.2-slim
+
+LABEL maintainer="phithon <root@leavesongs.com>"
+
+RUN set -ex \
+    && apt-get update \
+    && apt-get install -y --no-install-recommends openssh-client \
+    && mkdir -p /etc/ssh \
+    && ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ""
+
+COPY start_ssh.escript /usr/local/bin/start_ssh.escript
+
+CMD ["escript", "/usr/local/bin/start_ssh.escript"]

base/erlang/with-ssh/27.3.2/start_ssh.escript

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+#!/usr/bin/env escript
+%%! -sname ssh_runner
+
+main(_) ->
+    application:start(asn1),
+    application:start(crypto),
+    application:start(public_key),
+    application:start(ssh),
+
+    io:format("Starting SSH daemon with logging...~n"),
+
+    case ssh:daemon(2222, [
+        {system_dir, "/etc/ssh"},
+        
+        {user_dir_fun, fun(User) ->
+            Dir = filename:join("/home", User),
+            io:format("Resolving user_dir for ~p: ~s/.ssh~n", [User, Dir]),
+            filename:join(Dir, ".ssh")
+        end},
+        
+        {connectfun, fun(User, PeerAddr, Method) ->
+            io:format("Auth success for user: ~p from ~p via ~p~n",
+                      [User, PeerAddr, Method]),
+            true
+        end},
+
+        {failfun, fun(User, PeerAddr, Reason) ->
+            io:format("Auth failed for user: ~p from ~p, reason: ~p~n",
+                      [User, PeerAddr, Reason]),
+            true
+        end},
+        
+        {auth_methods, "publickey,password"},
+        
+        {user_passwords, [{"root", "vulhub"}]},
+        {idle_time, infinity},
+        {max_channels, 10},
+        {max_sessions, 10},
+        {parallel_login, true}
+    ]) of
+        {ok, _Pid} ->
+            io:format("SSH daemon running on port 2222. Press Ctrl+C to exit.~n");
+        {error, Reason} ->
+            io:format("Failed to start SSH daemon: ~p~n", [Reason])
+    end,
+
+    receive
+        stop -> ok
+    end.