[sway] add ueberzug and configure ranger; error handling in chromium_widevine scripts updated

editions/sway

@@ -130,6 +130,7 @@ seahorse
 simple-scan
 silver
 system-config-printer
+ueberzug
 ytop
 zathura
 zathura-pdf-poppler

overlays/sway/etc/skel/.config/ranger/rc.conf

 default_linemode devicons
+set show_hidden true
 set vcs_aware true
+set preview_images true
+set preview_images_method ueberzug

overlays/sway/usr/local/bin/install_chromium_widevine.sh

@@ -14,7 +14,7 @@ TEMP_DIR="$(mktemp -p /var/cache/ -td ChromeOS-IMG.XXXXXX)"
 # check online connectivity
 wget -q --spider https://google.com
 CONNECTION_STATUS=$?
-if [ $CONNECTION_STATUS -ne 0 ]; then
+if [[ $CONNECTION_STATUS -ne 0 ]]; then
   echo "You have to establish an online connection first!" 1>&2
   exit 1
 fi
@@ -40,12 +40,12 @@ if ! available git; then
   pacman -S --noconfirm git
 fi
 
-if [ ! -d $CONTAINER_DIR ]; then
+if [[ ! -d $CONTAINER_DIR ]]; then
   echo Creating base directory for systemd containers $CONTAINER_DIR...
   mkdir -p $CONTAINER_DIR
 fi
 
-if [ ! -d $CONTAINER_DIR/$CONTAINER_ID ]; then
+if [[ ! -d $CONTAINER_DIR/$CONTAINER_ID ]]; then
   echo Bootstrap new Debian 10 Buster armhf container
   cd $CONTAINER_DIR
   debootstrap --include=systemd-container,debconf --components=main,universe --arch=armhf buster $CONTAINER_ID

overlays/sway/usr/local/bin/launch_chromium_widevine.sh

 #!/bin/sh
 
+set -e
+
 CONTAINER_DIR=/var/lib/machines/
 CONTAINER_ID=chromium_widevine
 
 machinectl -q image-status $CONTAINER_ID >/dev/null 2>&1
 IMAGE_STATUS=$?
 
-if [ $IMAGE_STATUS -ne 0 ]; then
+if [[ $IMAGE_STATUS -ne 0 ]]; then
   echo Please run the install_chromium_widevine script first!
   notify-send -u critical "Missing image" "Please run the install_chromium_widevine script!"
   exit 1
 fi
 
-if [ ! -d $HOME/.local/share/chromium_widevine ]; then
+if [[ ! -d $HOME/.local/share/chromium_widevine ]]; then
   mkdir -p $HOME/.local/share/chromium_widevine
 fi
 
-set -e
-
 # dbus session sharing
 if [[ -n $DBUS_SESSION_BUS_ADDRESS ]]; then # remove prefix
    host_dbus=${DBUS_SESSION_BUS_ADDRESS#unix:path=};