Update Dockerfile

Dockerfile

@@ -3,44 +3,35 @@ FROM ubuntu:22.04
 ENV DEBIAN_FRONTEND=noninteractive
 ENV HOSTNAME=Nobita
 
-# ---- Base packages (ONE shot, ONE layer) ----
+# ---- Install Everything in One Layer ----
 RUN apt-get update && apt-get install -y --no-install-recommends \
- ca-certificates \
- curl \
- wget \
- git \
- sudo \
- docker.io \
- htop \
- btop \
- neovim \
- lsof \
- qemu-system \
- cloud-image-utils \
- cockpit \
- cockpit-machines \
- qemu-kvm \
- libvirt-daemon-system \
- libvirt-clients \
- bridge-utils \
- virt-manager \
- && rm -rf /var/lib/apt/lists/*
+    ca-certificates \
+    curl \
+    wget \
+    git \
+    sudo \
+    dbus \
+    cockpit \
+    cockpit-machines \
+    htop \
+    btop \
+    neovim \
+    lsof \
+    && rm -rf /var/lib/apt/lists/*
 
 # ---- Install code-server ----
 RUN curl -fsSL https://code-server.dev/install.sh | sh
 
-# ---- Set root password (root/root) ----
-RUN echo "root:root" | chpasswd
+# ---- Root Login Setup ----
+RUN echo "root:root" | chpasswd && \
+    rm -f /etc/cockpit/disallowed-users || true
 
-# ---- Allow root login in Cockpit ----
-RUN rm -f /etc/cockpit/disallowed-users || true
-
-# ---- Add root to virtualization groups ----
-RUN usermod -aG libvirt,kvm root
-
-# ---- Workspace ----
 WORKDIR /workspace
 
 EXPOSE 7860 9090
 
-CMD bash -c "service dbus start && service libvirtd start && service cockpit start && code-server --bind-addr 0.0.0.0:7860 --auth none"
+# ---- Startup Script ----
+CMD bash -c "\
+service dbus start && \
+service cockpit start && \
+code-server --bind-addr 0.0.0.0:7860 --auth none"