jens/docker-xserver-novnc
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Switch to ich777/novnc-baseimage and fix stale X lock on restart

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jayfield/novnc-baseimage no longer resolves, so point at the public
ich777/novnc-baseimage instead. That image lays out TurboVNC, websockify,
and noVNC via standard package paths rather than /opt/TurboVNC and
/tmp/websockify /tmp/noVNC, so server.sh is updated to match.

Also remove any stale .X99-lock/.X11-unix socket before starting Xvnc,
since /tmp survives docker stop/start and previously left Xvnc unable to
rebind the display on restart. Signal exit-code math in signals.sh now
uses bash arithmetic instead of bc, which isn't present in the new base
image.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RZjg4yXCYacriPz3euenQF
This commit is contained in:
jens
2026-07-27 23:07:00 +02:00
co-authored by Claude Sonnet 5
parent 16b0b1e253
commit 089872fd28
3 changed files with 9 additions and 4 deletions
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Dockerfile
+1 -1
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@@ -1,5 +1,5 @@
# syntax=docker/dockerfile:1 # syntax=docker/dockerfile:1
FROM jayfield/novnc-baseimage FROM ich777/novnc-baseimage
RUN apt-get update && \ RUN apt-get update && \
apt-get -y install --no-install-recommends net-tools socat && \ apt-get -y install --no-install-recommends net-tools socat && \
scripts/server.sh
+7 -2
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@@ -5,8 +5,13 @@ RFB_PORT=59${DISPLAY_NUM}
NOVNC_PORT=80${DISPLAY_NUM} NOVNC_PORT=80${DISPLAY_NUM}
echo Display at ${DISPLAY} with ${SCREEN_W}x${SCREEN_H}x24 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 doesn't get a chance to clean these up when the container is killed/stopped,
# and /tmp persists across `docker restart`, so a stale lock blocks the next start.
rm -f /tmp/.X${DISPLAY_NUM}-lock /tmp/.X11-unix/X${DISPLAY_NUM}
Xvnc ${DISPLAY} -geometry ${SCREEN_W}x${SCREEN_H} -depth 24 +xinerama -securitytypes none >/var/log/xvfb.log &
fluxbox & 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}
socat TCP-LISTEN:60${DISPLAY_NUM},fork,bind=0.0.0.0 UNIX-CONNECT:/tmp/.X11-unix/X${DISPLAY_NUM} socat TCP-LISTEN:60${DISPLAY_NUM},fork,bind=0.0.0.0 UNIX-CONNECT:/tmp/.X11-unix/X${DISPLAY_NUM}
scripts/signals.sh
+1 -1
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@@ -21,5 +21,5 @@ signal_name_to_number() {
signal_return_val() { signal_return_val() {
SIGNAME="$1" SIGNAME="$1"
SIGNUM=$(signal_name_to_number ${SIGNAME}) SIGNUM=$(signal_name_to_number ${SIGNAME})
echo "128 + $SIGNUM" | bc echo $((128 + SIGNUM))
} }