Latest change haven't been pushed to docker hub with proper tag.

[cnnblike]

Hi, per my investigation, latest change related to BACKUP_CUSTOM_LABEL hasn't been pushed to docker hub yet when pulled from tag latest.
You may want to add latest to the revision 2.3.0

root@58e5fb2cc2b5:~# cat backup.sh
#!/bin/bash

# Cronjobs don't inherit their env, so load from file
source env.sh

function info {
  bold="\033[1m"
  reset="\033[0m"
  echo -e "\n$bold[INFO] $1$reset\n"
}

info "Backup starting"
TIME_START="$(date +%s.%N)"
DOCKER_SOCK="/var/run/docker.sock"
if [ -S "$DOCKER_SOCK" ]; then
  TEMPFILE="$(mktemp)"
  docker ps --format "{{.ID}}" --filter "label=docker-volume-backup.stop-during-backup=true" > "$TEMPFILE"

[jareware]

Uhh, indeed. Will need to sort that out.

Regardless, you're better off with depending on an exact version than latest, so that your backups don't suddenly break when new versions are published.