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imagegenius/duplicati

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Duplicati is a backup client that securely stores encrypted, incremental, compressed remote backups of local files on cloud storage services and remote file servers.

duplicati

Supported Architectures

We use Docker manifest for cross-platform compatibility. More details can be found on Docker's website.

To obtain the appropriate image for your architecture, simply pull ghcr.io/imagegenius/duplicati:latest. Alternatively, you can also obtain specific architecture images by using tags.

This image supports the following architectures:

Architecture Available Tag
x86-64 ✅ amd64-<version tag>
arm64 ✅ arm64v8-<version tag>
armhf ❌

Application Setup

The WebUI can be found at http://your-ip:8200.

This image is similar to linuxserver/duplicati, but based on alpine.

Usage

Example snippets to start creating a container:

Docker Compose

---
services:
  duplicati:
    image: ghcr.io/imagegenius/duplicati:latest
    container_name: duplicati
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Etc/UTC
      - CLI_ARGS= #optional
    volumes:
      - path_to_appdata:/config
      - path_to_backups:/backups
      - path_to_source:/source
      - /tmp:/tmp
    ports:
      - 8200:8200
    restart: unless-stopped

Docker CLI (Click here for more info)

docker run -d \
  --name=duplicati \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Etc/UTC \
  -e CLI_ARGS= `#optional` \
  -p 8200:8200 \
  -v path_to_appdata:/config \
  -v path_to_backups:/backups \
  -v path_to_source:/source \
  -v /tmp:/tmp \
  --restart unless-stopped \
  ghcr.io/imagegenius/duplicati:latest

Parameters

To configure the container, pass variables at runtime using the format <external>:<internal>. For instance, -p 8080:80 exposes port 80 inside the container, making it accessible outside the container via the host's IP on port 8080.

Parameter Function
-p 8200 WebUI Port
-e PUID=1000 UID for permissions - see below for explanation
-e PGID=1000 GID for permissions - see below for explanation
-e TZ=Etc/UTC Specify a timezone to use, see this list.
-e CLI_ARGS= Optionally specify any CLI variables you want to launch the app with
-v /config Appdata Path
-v /backups Backup Destination Path
-v /source Backup Source Path
-v /tmp Temporary Uploads Path

Umask for running applications

All of our images allow overriding the default umask setting for services started within the containers using the optional -e UMASK=022 option. Note that umask works differently than chmod and subtracts permissions based on its value, not adding. For more information, please refer to the Wikipedia article on umask here.

User / Group Identifiers

To avoid permissions issues when using volumes (-v flags) between the host OS and the container, you can specify the user (PUID) and group (PGID). Make sure that the volume directories on the host are owned by the same user you specify, and the issues will disappear.

Example: PUID=1000 and PGID=1000. To find your PUID and PGID, run id user.

  $ id username
    uid=1000(dockeruser) gid=1000(dockergroup) groups=1000(dockergroup)

Updating the Container

Most of our images are static, versioned, and require an image update and container recreation to update the app. We do not recommend or support updating apps inside the container. Check the Application Setup section for recommendations for the specific image.

Instructions for updating containers:

Via Docker Compose

  • Update all images: docker-compose pull
    • or update a single image: docker-compose pull duplicati
  • Let compose update all containers as necessary: docker-compose up -d
    • or update a single container: docker-compose up -d duplicati
  • You can also remove the old dangling images: docker image prune

Via Docker Run

  • Update the image: docker pull ghcr.io/imagegenius/duplicati:latest
  • Stop the running container: docker stop duplicati
  • Delete the container: docker rm duplicati
  • Recreate a new container with the same docker run parameters as instructed above (if mapped correctly to a host folder, your /config folder and settings will be preserved)
  • You can also remove the old dangling images: docker image prune

Versions

  • 24.04.24: - rebase to alpine 3.19
  • 21.03.23: - Add service checks
  • 26.01.23: - rearrange init files.
  • 01.03.23: - Initial release.