Attempt more KDE fixes

Dockerfile

@@ -256,7 +256,6 @@ Pin-Priority: -1" > /etc/apt/preferences.d/firefox-nosnap && \
         kaccounts-providers \
         kactivities-bin \
         kaddressbook \
-        kamera \
         kate \
         kcalc \
         kcharselect \
@@ -271,7 +270,6 @@ Pin-Priority: -1" > /etc/apt/preferences.d/firefox-nosnap && \
         kdf \
         kdialog \
         kget \
-        kgamma5 \
         kgpg \
         khelpcenter \
         kimageformat-plugins \
@@ -313,7 +311,6 @@ Pin-Priority: -1" > /etc/apt/preferences.d/firefox-nosnap && \
         plasma-widgets-addons \
         policykit-desktop-privileges \
         polkit-kde-agent-1 \
-        powerdevil \
         print-manager \
         qapt-deb-installer \
         qml-module-org-kde-runnermodel \

entrypoint.sh

@@ -127,11 +127,8 @@ if [ "${NOVNC_ENABLE,,}" = "true" ]; then
   /opt/noVNC/utils/novnc_proxy --vnc localhost:5900 --listen 8080 --heartbeat 10 &
 fi
 
-# Choose startplasma-x11 or startkde for KDE startup
-if [ -x "$(command -v startplasma-x11)" ]; then export KDE_START="startplasma-x11"; else export KDE_START="startkde"; fi
-
 # Start KDE desktop environment
-$KDE_START &
+/usr/bin/dbus-launch /usr/bin/startplasma-x11 &
 
 # Add custom processes right below this line, or within `supervisord.conf` to perform service management similar to systemd