Add linux-vm Docker build files for rego-tunnel

apps/rego-tunnel/build/Dockerfile

@@ -0,0 +1,25 @@
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y \
+    qemu-system-x86 \
+    qemu-utils \
+    novnc \
+    websockify \
+    openssh-server \
+    supervisor \
+    && rm -rf /var/lib/apt/lists/*
+
+# Setup SSH
+RUN mkdir /var/run/sshd && \
+    echo 'root:vmpassword' | chpasswd && \
+    sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config
+
+WORKDIR /vm
+
+COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+COPY start-vm.sh /usr/local/bin/start-vm.sh
+RUN chmod +x /usr/local/bin/start-vm.sh
+
+CMD ["/usr/bin/supervisord", "-c", "/etc/supervisor/conf.d/supervisord.conf"]