diff --git a/Dockerfile b/Dockerfile
index ca6a920..f2cdf51 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,36 +10,30 @@ ENV VNC_PORT=5901
 RUN apt-get update && apt-get install -y \
     xfce4 \
     xfce4-goodies \
-    tightvncserver \
+    tigervnc-standalone-server \
+    tigervnc-common \
     dbus-x11 \
     x11-xserver-utils \
-    xfonts-base
+    xfonts-base \
+    chromium \
+    nano \
+    htop \
+    lightdm \
+    sudo
 
+# User anlegen
+RUN useradd -m -s /bin/bash user \
+    && echo "$USER:$PASSWORD" | chpasswd \
+    && adduser $USER sudo
 
-# Benutzer anlegen
-RUN useradd -m -s /bin/bash $USER && \
-    echo "$USER:$PASSWORD" | chpasswd && \
-    adduser $USER sudo
+# VNC xstartup konfigurieren
+RUN mkdir -p /etc/vnc
+RUN echo '#!/bin/bash\nexec /usr/sbin/lightdm' > /etc/vnc/xstartup \
+    && chmod +x /etc/vnc/xstartup
 
-USER $USER
-WORKDIR /home/$USER
-
-# VNC-Konfiguration
-RUN mkdir -p /home/$USER/.vnc && \
-    echo "$PASSWORD" | vncpasswd -f > /home/$USER/.vnc/passwd && \
-    chmod 600 /home/$USER/.vnc/passwd
-
-# xstartup für XFCE
-RUN echo '#!/bin/bash\n\
-unset SESSION_MANAGER\n\
-unset DBUS_SESSION_BUS_ADDRESS\n\
-exec startxfce4 &' > /home/$USER/.vnc/xstartup && \
-    chmod +x /home/$USER/.vnc/xstartup
+COPY start.sh /start.sh
+RUN chmod +x /start.sh
 
 EXPOSE 5901
 
-COPY start.sh /start.sh
-USER root
-RUN chmod +x /start.sh
-
 CMD ["/start.sh"]
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