cron script to build docker containers on a schedule

cron-buildx.sh

#!/usr/bin/env bash
# shellcheck shell=bash
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
##@Version           :  202309022354-git
# @@Author           :  Jason Hempstead
# @@Contact          :  git-admin@casjaysdev.pro
# @@License          :  WTFPL
# @@ReadME           :  cron-buildx --help
# @@Copyright        :  Copyright: (c) 2023 Jason Hempstead, Casjays Developments
# @@Created          :  Saturday, Sep 02, 2023 23:54 EDT
# @@File             :  cron-buildx
# @@Description      :  Run buildx on a schedule
# @@Changelog        :  newScript
# @@TODO             :  Refactor code
# @@Other            :
# @@Resource         :
# @@Terminal App     :  no
# @@sudo/root        :  no
# @@Template         :  bash/system
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# shell check options
# shellcheck disable=SC2317
# shellcheck disable=SC2120
# shellcheck disable=SC2155
# shellcheck disable=SC2199
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
__trap_timer() {
  local retval=$?
  if [ -n "$(command -v bc 2>/dev/null)" ]; then
  local stop_timer="$(date +%s.%N)"
  local dt=$(echo "$stop_timer - $START_TIMER" | bc)
  local dd=$(echo "$dt/86400" | bc)
  local dt2=$(echo "$dt-86400*$dd" | bc)
  local dh=$(echo "$dt2/3600" | bc)
  local dt3=$(echo "$dt2-3600*$dh" | bc)
  local dm=$(echo "$dt3/60" | bc)
  local ds=$(echo "$dt3-60*$dm" | bc)
  TIMER_SHOW_RESULTS="$(printf '%s\n' "$(LC_NUMERIC=C printf "Total runtime: %d Days, %02d Hours, %02d Minutes, %02.4f Seconds\n" $dd $dh $dm $ds)")"
  fi
  return $retval
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
set -x
START_TIMER="$(date +%s.%N)"
exitCode=0
printf 'Starting buildx on %s\n' "$(date)" >/var/log/buildx.log
for d in ~/Projects/github/casjaysdev/docker-* ~/Projects/github/casjaysdevdocker/*;do
  if buildx --dir $d all --raw >>"$HOME/.local/log/buildx/cron.log" 2>&1; then
    echo "Built $d" >>/var/log/buildx.log
    exitCode=$((0+$exitCode))
  else
    echo "Failed to build $d" >>/var/log/buildx.buildx.log
    exitCode=$((0+$exitCode))
  fi
  dockermgr prune &>/dev/null
done
__trap_timer >>/var/log/buildx.log
printf '%s\n%s\n' "$TIMER_SHOW_RESULTS" "Exit status is $exitCode">>/var/log/buildx.log
cat /var/log/buildx.log | web-notify telegram
rm -Rf /var/log/buildx.log
exit $exitCode