Dockerfile hinzugefügt

Dockerfile

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+FROM debian:12
+
+ENV DEBIAN_FRONTEND=noninteractive
+ENV USER=vncuser
+ENV PASSWORD=vncpass
+ENV DISPLAY=:1
+ENV VNC_PORT=5901
+
+# Pakete installieren
+RUN apt-get update && apt-get install -y \
+    xfce4 xfce4-goodies \
+    tightvncserver \
+    dbus-x11 xterm sudo \
+    && apt-get clean
+
+# Benutzer anlegen
+RUN useradd -m -s /bin/bash $USER && \
+    echo "$USER:$PASSWORD" | chpasswd && \
+    adduser $USER sudo
+
+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
+
+EXPOSE 5901
+
+COPY start.sh /start.sh
+USER root
+RUN chmod +x /start.sh
+
+CMD ["/start.sh"]