Docker Volume Backup

I am using offen/docker-volume-backup:v2.46.1 which currently makes a zip into a temporary directory and then copies it to the backup location. This is not desirable since I dont have the storage space for it. I need something that just makes the zip directly to the desired backup location.

Features:

• Set cron for when to backup
• Discord webhook support
• Keep the last x backups
• storage space alerts

Usage

Here is a bare minimum example docker compose file:

services:
  docker-volume-backup:
    image: git.insberr.com/insberr/docker-volume-backup:latest
    volumes:
      - volume-to-backup:/source
      - /mnt/your-backups-folder:/backup
    environment:
      # Crontab schedule to run the backup on
      # https://crontab.guru/
      - SCHEDULE=50 11 * * *

or a one off backup:

docker run -d \
  --name docker-volume-backup \
  -v volume-to-backup:/source \
  -v /mnt/your-backups-folder:/backup \
  -e RUN_ONCE=true\
  git.insberr.com/insberr/docker-volume-backup:latest

Configuration

Environment variables

### REQUIRED ###

# Crontab schedule to run the backup on
SCHEDULE=50 11 * * *


### OPTIONAL ###

# Run once immedietly. If this value is provided, the `SCHEDULE` value is not required
RUN_ONCE=true

# Crontab schedule to run the backup on
DISCORD_WEBHOOK=<DISCORD_WEBHOOK_URL>

PREFIX=some-filename-prefix

# This will keep n backups (including the newly created backup)
# To keep all backups, simply remove the environment variable
KEEP_N=5

# The path that the source files are mounted to in the container
# Default is /source
SOURCE=/some/path/in/container

# The path that the backup tar.gz should be written to
# Default is /backup
DESTINATION=/some/path/in/container