jjbruntonandClaude Opus 4.7
665ff8b1f3
A bot crash leaves /tmp/.X99-lock behind; the next container start hits "Server is already active for display 99" and the entrypoint previously fell through with only a warning, so Chromium then died with "Missing X server or $DISPLAY" in a tight crash loop. Remove the stale lock up-front and fail hard if Xvfb still won't come up, so the failure mode is "container won't start" rather than "bot crashes forever". Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
85 lines
2.7 KiB
Bash
Executable File
85 lines
2.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Start Xvfb + x11vnc + noVNC so a human can complete Reddit login
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# through the dashboard, then exec the Node bot which drives Chromium
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# on that virtual display.
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set -euo pipefail
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DISPLAY_NUM="${VNC_DISPLAY_NUM:-99}"
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VNC_PORT="${VNC_PORT:-5900}"
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NOVNC_PORT="${NOVNC_PORT:-6080}"
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GEOMETRY="${SCREEN_GEOMETRY:-1280x800x24}"
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export DISPLAY=":${DISPLAY_NUM}"
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# noVNC ships under different paths depending on the distro; find the web root once.
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if [ -d /usr/share/novnc ]; then
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NOVNC_WEB_DIR=/usr/share/novnc
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elif [ -d /usr/share/webapps/novnc ]; then
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NOVNC_WEB_DIR=/usr/share/webapps/novnc
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else
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echo "[entrypoint] could not locate noVNC web root" >&2
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exit 1
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fi
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# Make / on the noVNC server land on vnc.html with autoconnect.
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if [ ! -e "${NOVNC_WEB_DIR}/index.html" ] && [ -e "${NOVNC_WEB_DIR}/vnc.html" ]; then
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ln -sf vnc.html "${NOVNC_WEB_DIR}/index.html"
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fi
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# Clear any stale lock from a prior unclean exit — otherwise Xvfb refuses
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# to bind to the display and the bot starts up with no X server.
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rm -f "/tmp/.X${DISPLAY_NUM}-lock" "/tmp/.X11-unix/X${DISPLAY_NUM}" 2>/dev/null || true
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echo "[entrypoint] starting Xvfb on ${DISPLAY} (${GEOMETRY})"
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Xvfb "${DISPLAY}" -screen 0 "${GEOMETRY}" -ac +extension RANDR &
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XVFB_PID=$!
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# Give Xvfb a moment to come up. Requires x11-utils (xdpyinfo).
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XVFB_READY=0
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for i in $(seq 1 50); do
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if xdpyinfo -display "${DISPLAY}" >/dev/null 2>&1; then
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echo "[entrypoint] Xvfb is ready after ${i} checks"
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XVFB_READY=1
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break
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fi
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sleep 0.2
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done
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if [ "${XVFB_READY}" != "1" ]; then
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echo "[entrypoint] FATAL: Xvfb did not respond after 10s — refusing to launch bot without a display" >&2
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exit 1
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fi
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# Minimal window manager so dialogs and tabs aren't stuck behind the root window.
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if command -v fluxbox >/dev/null 2>&1; then
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fluxbox >/dev/null 2>&1 &
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fi
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VNC_ARGS=(-display "${DISPLAY}" -forever -shared -rfbport "${VNC_PORT}" -nopw_warn)
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if [ -n "${VNC_PASSWORD:-}" ]; then
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mkdir -p /root/.vnc
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x11vnc -storepasswd "${VNC_PASSWORD}" /root/.vnc/passwd >/dev/null
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VNC_ARGS+=(-rfbauth /root/.vnc/passwd)
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echo "[entrypoint] x11vnc starting with password auth"
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else
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VNC_ARGS+=(-nopw)
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echo "[entrypoint] WARNING: VNC_PASSWORD not set — VNC has no auth"
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fi
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x11vnc "${VNC_ARGS[@]}" >/var/log/x11vnc.log 2>&1 &
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X11VNC_PID=$!
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echo "[entrypoint] starting noVNC (websockify) on :${NOVNC_PORT}"
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websockify --web "${NOVNC_WEB_DIR}" "${NOVNC_PORT}" "localhost:${VNC_PORT}" \
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>/var/log/websockify.log 2>&1 &
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NOVNC_PID=$!
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cleanup() {
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echo "[entrypoint] shutting down"
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kill "${NOVNC_PID}" "${X11VNC_PID}" "${XVFB_PID}" 2>/dev/null || true
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wait || true
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}
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trap cleanup TERM INT EXIT
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echo "[entrypoint] launching bot"
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exec node dist/index.js
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