fix automatic screen lock

Author: gezp

ubuntu-desktop/18.04/Dockerfile

@@ -78,7 +78,7 @@ RUN curl -fSL "https://www.nomachine.com/free/linux/64/deb" -o nomachine.deb &&\
     groupmod -g 2000 nx &&\
     rm nomachine.deb &&\
     sed -i "s|#EnableClipboard both|EnableClipboard both |g" /usr/NX/etc/server.cfg &&\
-    sed -i '/DefaultDesktopCommand/c\DefaultDesktopCommand "/usr/bin/startxfce4 && xset s off"' /usr/NX/etc/node.cfg
+    sed -i '/DefaultDesktopCommand/c\DefaultDesktopCommand "xset s off && /usr/bin/startxfce4"' /usr/NX/etc/node.cfg
 
 ## Configure ssh 
 RUN mkdir /var/run/sshd &&  \

ubuntu-desktop/20.04/Dockerfile

@@ -75,7 +75,7 @@ RUN curl -fSL "https://www.nomachine.com/free/linux/64/deb" -o nomachine.deb &&\
     groupmod -g 2000 nx &&\
     rm nomachine.deb &&\
     sed -i "s|#EnableClipboard both|EnableClipboard both |g" /usr/NX/etc/server.cfg &&\
-    sed -i '/DefaultDesktopCommand/c\DefaultDesktopCommand "/usr/bin/startxfce4 && xset s off"' /usr/NX/etc/node.cfg
+    sed -i '/DefaultDesktopCommand/c\DefaultDesktopCommand "xset s off && /usr/bin/startxfce4"' /usr/NX/etc/node.cfg
 
 ## Configure ssh
 RUN mkdir /var/run/sshd &&  \

ubuntu-desktop/22.04/Dockerfile

@@ -75,7 +75,7 @@ RUN curl -fSL "https://www.nomachine.com/free/linux/64/deb" -o nomachine.deb &&\
     groupmod -g 2000 nx &&\
     rm nomachine.deb &&\
     sed -i "s|#EnableClipboard both|EnableClipboard both |g" /usr/NX/etc/server.cfg &&\
-    sed -i '/DefaultDesktopCommand/c\DefaultDesktopCommand "/usr/bin/startxfce4 && xset s off"' /usr/NX/etc/node.cfg &&\
+    sed -i '/DefaultDesktopCommand/c\DefaultDesktopCommand "xset s off && /usr/bin/startxfce4"' /usr/NX/etc/node.cfg &&\
     # config pulseaudio
     cp -R /etc/pulse/* /usr/NX/share/audio/ &&\
     sed -i '/AudioInterface pipewire/c\AudioInterface pulseaudio' /usr/NX/etc/node.cfg  &&\