Repoint to ich777/novnc-baseimage

jayfield/novnc-baseimage (built by docker-novnc-baseimage) has been
retired, so this now builds on the public ich777/novnc-baseimage
instead. That image puts Xvnc/websockify on $PATH and noVNC's web
client at /usr/share/novnc/ rather than /opt/TurboVNC and /tmp, so
server.sh is updated to match. Verified with a full rebuild and
container start: Xvnc, fluxbox, and websockify all come up and the
noVNC web UI responds.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018QuKZRefXR3hVaUiXgeu6i

Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM jayfield/novnc-baseimage
+FROM ich777/novnc-baseimage
 
 RUN apt-get update && \
     apt-get -y install --no-install-recommends dosbox unzip alsa-utils smbclient && \

scripts/server.sh

@@ -5,6 +5,6 @@ RFB_PORT=59${DISPLAY_NUM}
 NOVNC_PORT=80${DISPLAY_NUM}
 
 echo Display at ${DISPLAY} with ${SCREEN_W}x${SCREEN_H}x24
-/opt/TurboVNC/bin/Xvnc ${DISPLAY} -geometry ${SCREEN_W}x${SCREEN_H} -depth 24 +xinerama -securitytypes none >/var/log/xvfb.log &
+Xvnc ${DISPLAY} -geometry ${SCREEN_W}x${SCREEN_H} -depth 24 +xinerama -securitytypes none >/var/log/xvfb.log &
 fluxbox &
-/tmp/websockify/run -D --web=/tmp/noVNC/ --cert=/tmp/novnc.pem --key=/tmp/novnc.key ${NOVNC_PORT} localhost:${RFB_PORT}
+websockify -D --web=/usr/share/novnc/ --cert=/tmp/novnc.pem --key=/tmp/novnc.key ${NOVNC_PORT} localhost:${RFB_PORT}