docker compose bugfix

services/carbeat/Dockerfile

@@ -4,7 +4,7 @@ FROM ubuntu:24.04
 # Build-time args
 ARG PASSWORD=root
 ENV DEBIAN_FRONTEND=noninteractive
-WORKDIR /home/ctf/chall
+WORKDIR /home/ctfuser/chall
 
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
@@ -18,15 +18,15 @@ RUN apt-get update && \
       vim \
     && rm -rf /var/lib/apt/lists/*
 
-RUN useradd -m -d /home/ctf -s /bin/bash ctf && echo "ctf:${PASSWORD}" | chpasswd
+RUN useradd -m -d /home/ctfuser -s /bin/bash ctfuser && echo "ctfuser:${PASSWORD}" | chpasswd
 
 RUN mkdir -p /var/run/sshd
 
-COPY chall/ /home/ctf/chall
+COPY chall/ /home/ctfuser/chall
 COPY ./entrypoint.sh /entrypoint.sh
 
-RUN chmod +x /entrypoint.sh /home/ctf/chall/run.sh && \
-    chown -R root:root /home/ctf/chall && chmod -R 555 /home/ctf/chall
+RUN chmod +x /entrypoint.sh /home/ctfuser/chall/run.sh && \
+    chown -R root:root /home/ctfuser/chall && chmod -R 555 /home/ctfuser/chall
 
 EXPOSE 9000 22
 CMD ["/entrypoint.sh"]

services/carbeat/entrypoint.sh

@@ -11,7 +11,7 @@ grep -q "^PasswordAuthentication" /etc/ssh/sshd_config && \
   sed -i "s/^PasswordAuthentication.*/PasswordAuthentication yes/" /etc/ssh/sshd_config || \
   echo "PasswordAuthentication yes" >> /etc/ssh/sshd_config
 
-echo "AllowUsers ctf" >> /etc/ssh/sshd_config
+echo "AllowUsers ctfuser" >> /etc/ssh/sshd_config
 
 /usr/sbin/sshd
 
@@ -21,4 +21,4 @@ if [ -n "$FLAG" ]; then
     chown root:root /flag.txt
 fi
 
-exec su -c "cd /home/ctf/chall && ./run.sh" -s /bin/bash ctf
+exec su -c "cd /home/ctfuser/chall && ./run.sh" -s /bin/bash ctfuser