Error when DOCKER MOD is added

General Docker
1

Below is the compose file for my Duplicati. I start to receive lot of error the moment I enable environment variable for Docker mod to include Docker in Docker (universal-docker-in-docker).

services:
duplicati:
image: lscr.io/linuxserver/duplicati:latest
container_name: duplicati
environment:
- DOCKER_MODS=linuxserver/mods:universal-docker-in-docker
- PUID=0
- PGID=0
- TZ=Etc/UTC
- SETTINGS_ENCRYPTION_KEY=MyEncrtpyKey
#- CLI_ARGS= #optional
privileged: true
volumes:
- /home/sparky/SparkyApps/duplicati/config:/config
- /mnt/crucial/duplicati_tmp/tmp:/tmp
- /mnt/crucial/backups:/backups
- /mnt/:/source
- /home/sparky/SparkyApps/:/SparkyApps
- /var/run/docker.sock:/var/run/docker.sock # Add this line to mount Docker socket

ports:
  - 8200:8200
restart: unless-stopped

Logs:

image
image1620×2240 352 KB

2

I also noticied this error is happening when I add the below line to mount /tmp volume. Because boot disk just 240GB SSD. While backuping up 300GB of my files, Duplicati throws error that tmp directory is full. So I added below code to resolve that error. But it looks like DOCKER MOD doesn’t like this customization for some reason.

  • /mnt/crucial/duplicati_tmp/tmp:/tmp
3
  1. don’t paste text as an image, it looks like shit, paste text as text.
  2. pick one place to seek support, discord or discourse, not both.
4

It didn’t allow me to paste it as text stating new users can’t post more than two link. If the image is open-ended in new browser tab, it renders fine. But I will avoid posting image in future and post only in one place. I wasn’t sure where I will get answer. So gave it a try in both Discord & here.

5

Someone replied in the discord as “Don’t mount docker socket for docker in docker”. Error is gone after I removed the tmp and docker volume mapping.

6

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