add carbeat

services/carbeat/Dockerfile

@@ -0,0 +1,32 @@
+# Dockerfile
+FROM ubuntu:24.04
+
+# Build-time args
+ARG PASSWORD=root
+ENV DEBIAN_FRONTEND=noninteractive
+WORKDIR /home/ctf/chall
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+      make \
+      g++ \
+      socat \
+      build-essential \
+      openssh-server \
+      bash \
+      nano \
+      vim \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN useradd -m -d /home/ctf -s /bin/bash ctf && echo "ctf:${PASSWORD}" | chpasswd
+
+RUN mkdir -p /var/run/sshd
+
+COPY chall/ /home/ctf/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
+
+EXPOSE 9000 22
+CMD ["/entrypoint.sh"]