Development container for VS Code

.devcontainer/bin/init-dev-container.sh

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+#!/bin/bash
+
+NONROOT_USER=node
+LOG=/tmp/container-init.log
+
+# Execute the command it not already running
+startInBackgroundIfNotRunning()
+{
+	log "Starting $1."
+	echo -e "\n** $(date) **" | sudoIf tee -a /tmp/$1.log > /dev/null
+	if [ ! -f "/tmp/$1.pid" ] || ! ps -p $(cat /tmp/$1.pid) > /dev/null; then
+		($2 sh -c "while :; do echo [\$(date)] Process started.; $3; echo [\$(date)] Process exited!; sleep 5; done 2>&1" | sudoIf tee -a /tmp/$1.log > /dev/null & echo "$!" | sudoIf tee /tmp/$1.pid > /dev/null)
+		log "$1 started."
+	else
+		echo "$1 is already running." | sudoIf tee -a /tmp/$1.log > /dev/null
+		log "$1 is already running."
+	fi
+}
+
+# Use sudo to run as root when required
+sudoIf()
+{
+    if [ "$(id -u)" -ne 0 ]; then
+        sudo "$@"
+    else
+        "$@"
+    fi
+}
+
+# Use sudo to run as non-root user if not already running
+sudoUserIf()
+{
+    if [ "$(id -u)" -eq 0 ]; then
+        sudo -u ${NONROOT_USER} "$@"
+    else
+        "$@"
+    fi
+}
+
+# Log messages
+log()
+{
+    echo -e "[$(date)] $@" | sudoIf tee -a $LOG > /dev/null
+}
+
+log "** SCRIPT START **"
+
+# Start dbus.
+log 'Running "/etc/init.d/dbus start".'
+if [ -f "/var/run/dbus/pid" ] && ! ps -p $(cat /var/run/dbus/pid) > /dev/null; then
+	sudoIf rm -f /var/run/dbus/pid
+fi
+sudoIf /etc/init.d/dbus start 2>&1 | sudoIf tee -a /tmp/dbus-daemon-system.log > /dev/null
+while ! pidof dbus-daemon > /dev/null; do
+	sleep 1
+done
+
+# Set up Xvfb.
+startInBackgroundIfNotRunning "Xvfb" sudoIf "Xvfb ${DISPLAY:-:1} +extension RANDR -screen 0 ${MAX_VNC_RESOLUTION:-1920x1080x16}"
+while ! pidof Xvfb > /dev/null; do
+	sleep 1
+done
+
+# Start fluxbox as a light weight window manager.
+startInBackgroundIfNotRunning "fluxbox" sudoUserIf "dbus-launch startfluxbox"
+while ! pidof fluxbox > /dev/null; do
+	sleep 1
+done
+
+# Set resolution
+/usr/local/bin/set-resolution ${VNC_RESOLUTION:-1280x720} ${VNC_DPI:-72}
+
+# Start x11vnc if installed.
+if type x11vnc 2>&1 > /dev/null; then
+	startInBackgroundIfNotRunning "x11vnc" sudoIf "x11vnc -display ${DISPLAY:-:1} -rfbport ${VNC_PORT:-5901}  -listen localhost -rfbportv6 ${VNC_PORT:-5901} -listenv6 localhost -xkb -shared -forever -nopw"
+else
+	log "Skipping x11vnc - not installed."
+fi
+
+# Spin up noVNC if installed.
+if [ -d "/usr/local/novnc" ]; then
+	startInBackgroundIfNotRunning "noVNC" sudoIf "/usr/local/novnc/noVNC*/utils/launch.sh --listen ${NOVNC_PORT:-6080} --vnc localhost:${VNC_PORT:-5901}"
+else
+	log "Skipping noVNC - not installed."
+fi
+
+# Run whatever was passed in
+log "Executing \"$@\"."
+"$@"
+log "** SCRIPT EXIT **"