Mongo 6.0+ Fails to Run Using WSL

[jramonrod]

Problem

When running the example docker-compose from https://hub.docker.com/_/mongo docker-compose fails with

mongo-express-1  | exec /sbin/tini: exec format error
mongo-1          | exec /usr/local/bin/docker-entrypoint.sh: exec format error

docker-compose.yml (copied from above link)

# Use root/example as user/password credentials
version: '3.1'

services:

  mongo:
    image: mongo:6
    restart: always
    environment:
      MONGO_INITDB_ROOT_USERNAME: root
      MONGO_INITDB_ROOT_PASSWORD: example

  mongo-express:
    image: mongo-express
    restart: always
    ports:
      - 8081:8081
    environment:
      ME_CONFIG_MONGODB_ADMINUSERNAME: root
      ME_CONFIG_MONGODB_ADMINPASSWORD: example
      ME_CONFIG_MONGODB_URL: mongodb://root:example@mongo:27017/

Architecture

Running opensuse in WSL 2

PS C:\Users\joses> wsl --list -v
  NAME                   STATE           VERSION
* openSUSE-Leap-15.5     Running         2
  docker-desktop-data    Running         2
  docker-desktop         Running         2

jose@HomePC:> uname -m
x86_64

jose@HomePC:> docker image inspect
....
        "Architecture": "amd64",
        "Os": "linux",
...

Workaround

Using mongodb with a lower version tag (5) and mongo-express as well (1.0.2-20-alpine3.19).

Expected

Mongodb and mongo-express example works out of the box.

[LaurentGoderre]

This looks like it's trying to use a Linux image in Windows Container mode. You should switch your Docker Desktop to use Linux images.

https://learn.microsoft.com/en-us/virtualization/windowscontainers/quick-start/quick-start-windows-10-linux

[jramonrod]

Hey I understand that and I have done all the WSL set up stuff necessary to run Docker Desktop with the Linux kernel. Please see the workaround section of my issue, I used an older image and it runs just fine.

[LaurentGoderre]

What happens if you try this tag instead? amd64/mongo:6. If that works, you ca try https://stackoverflow.com/a/66900911

[jramonrod]

That does work actually 🤔 I wonder why it would have behaved differently if judging from the tags on dockerhub 6 and 5 can be built for the same architectures.

Is your suggestion to set the environment variable in the WSL environment or on the windows host?

[LaurentGoderre]

I believe you need to set it in the WSL environment.

[LaurentGoderre]

And as to what changed, the older tags were in the docker manifest format while the newer one are using the OCI standard for storing the image.