Docker compose build error - ‘environment must be a mapping’

Docker Engine Compose
1

I hope that I am posting this in the right spot…

‘Google’ is failing me and I have spent the better part of the day so far trying to figure out what I am sure is a fairly simple fix.

I am working in Portainer trying to create a Stack and I have been working through numerous errors that it throws my way…not to be unexpected seeing how new I am to this. The one I am stuck on, as noted in the subject, is the volume paths.

Below is a snippet of what I am trying to do;

---
version: "2.15"
services:
  
## Players

  jellyfin:
    image: lscr.io/linuxserver/jellyfin:lastest
    container_name: jellyfin
    environment:
      PUID=1000
      PGID=1000
      TZ=America/Edmonton
    network_mode: 'bridge'
    volumes:
     - C:\Users\username\docker\configs\jellyfin\cache:/cache
     - C:\Users\username\docker\\configs\jellyfin\config:/config
     - D:\TV:/tvshows:ro
     - D:\Movies:/movies:ro
     - E:\Movies:/movies2:ro
    ports:
      - 8096:8096
    restart: unless-stopped

OS: Windows 10 Pro
Docker: 4.6.13

Thanks in advance!

2

That is the version of Docker Desktop. Docker (CE) and Docker Desktop are not the same. Docker Desktop contains Docker CE.

If you mean services must be a mapping what does that have to do with the volume paths?

The error message refers to that services is not a mapping, although it looks like that for me. Is it the whole compose file?

3

My apologies…still getting familiar with all the terminology.

In reverse order of your question, no that is not the entire compose file, however, I snipped it because I know it is erroring out on the first part of the stack. Here is the actual error;

“failed to deploy a stack: services.jellyfin.environment must be a mapping”

As I read that again, its referring to ‘environment’, not ‘volumes’

4

Oh I see… You forgot to use dashes before the environment variables.

You have to ways to define neironment variables.

As a list:

    environment:
      - PUID=1000
      - PGID=1000
      - TZ=America/Edmonton

or as a mapping

    environment:
      PUID: 1000
      PGID: 1000
      TZ: America/Edmonton

So the error message was not precise, but I also prefer the mapping style.

PS.: I moved the topic to the Compose category and fixed the topic title.

2 Likes
5

Thank you Sir…that cleared that up! Fixed all the references and tried to deploy the stack again. Now I get the following error;

failed to deploy a stack: jellyfin Pulling jellyfin Error Error response from daemon: manifest unknown

6

I guess because you refer to “lastest” and not “latest” in the image name.

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7

If we ever meet…I owe you a coffee! Its deploying now.

I guess one should step away from the computer for a while when you’ve been at things for 6 hours!

1 Like
8

That is absolutely true. I am glad it works now.

1 Like