[BUG] `docker compose pull` does not update images that are used in volumes with `type=image`

[oskolist]

Description

I use volumes with type=image a lot. offen because to it allows me add static apps to nginx without having a seperate container running another nginx. this works prefectly but I don't have a way to automatically update the used images. I can doing docker pull on each image but i think the purpose of docker compose pull was exactly to do that.

Steps To Reproduce

for example create compose.yaml with this content:

services:
  nginx:
    image: "nginx:alpine"
    volumes:
      - type: image
        source: mattfly/obsidian:latest
        target: /srv/http/ObsidianIRC
        image:
          subpath: usr/share/nginx/html/

• do docker compose up and then ctrl-c
• wait untill a new release be pushed to mattfly/obsidian:latest
• do docker compose pull
• you expect to new version mattfly/obsidian:latest be pulled but it does not and doing docker compose up will run container with the old version of mattfly/obsidian:latest

Compose Version

Docker Compose version v5.1.3