fix running udevadm trigger, add a UDEVD_QUIET environment variable

images/udevd/Dockerfile

@@ -9,5 +9,7 @@ RUN apt-get update -y && \
 
 COPY --chmod=777 scripts/startup.sh /opt/gow/startup.sh
 
+ENV UDEVD_QUIET=false
+
 ARG IMAGE_SOURCE
 LABEL org.opencontainers.image.source $IMAGE_SOURCE

images/udevd/scripts/startup.sh

@@ -1,15 +1,24 @@
 #!/bin/bash
+
 set -e
 
+source /opt/gow/bash-lib/utils.sh
+
 function start_udev() {
 	# mount_dev
     if command -v udevd &>/dev/null; then
         nsenter udevd --daemon &> /dev/null
     else
         nsenter /lib/systemd/systemd-udevd --daemon &> /dev/null
     fi
-    udevadm trigger &> /dev/null
+    udevadm trigger &> /dev/null || true
 }
 
 start_udev
+
+if [ "${UDEVD_QUIET:-false}" = "true" ]; then
+    # redirect stdout to /dev/null before running udevadm monitor
+    exec >/dev/null
+fi
+
 exec udevadm monitor