Secret permission doesn't seem to respect the documentation

[Davilink]

Description

I'm trying to mount my ssh key into my container and decide to use the secret in my docker compose file, but when i try to use my ssh key inside my devcontainer i get a message:

It is recommended that your private key files are NOT accessible by others. This private key will be ignored.

Reproduce

Create a docker compose file

services:
  app:
    build:
      context: ../v4
      dockerfile: ../.devcontainer/Dockerfile
    secrets:
      - private_ssh_key
    links:
      - db
    depends_on:
      - db
    volumes:
      - ../v4/:/var/www/html/v4/
      - ./scripts:/var/run/scripts/
    ports:
      - "8001:80"
secrets:
  private_ssh_key:
    file: ~/.ssh/bitbucket_rsa

According to the documentation the file should be mounted under /run/secrets/private_key_ssh WITH a permission 0440 https://docs.docker.com/compose/compose-file/05-services/#long-syntax-4

But when i ls -l the folder, i get this

I even try using the long syntax but still the same result.

Expected behavior

I would expect to have a file with the permission 0440

docker version

Client:
 Version:           27.0.3
 API version:       1.46
 Go version:        go1.21.11
 Git commit:        7d4bcd8
 Built:             Sat Jun 29 00:03:32 2024
 OS/Arch:           windows/amd64
 Context:           desktop-linux

Server: Docker Desktop 4.32.0 (157355)
 Engine:
  Version:          27.0.3
  API version:      1.46 (minimum version 1.24)
  Go version:       go1.21.11
  Git commit:       662f78c
  Built:            Sat Jun 29 00:02:50 2024
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.7.18
  GitCommit:        ae71819c4f5e67bb4d5ae76a6b735f29cc25774e
 runc:
  Version:          1.7.18
  GitCommit:        v1.1.13-0-g58aa920
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

docker info

PS C:\Users\DavidPelletier> docker info
Client:
 Version:    27.0.3
 Context:    desktop-linux
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.15.1-desktop.1
    Path:     C:\Program Files\Docker\cli-plugins\docker-buildx.exe
  compose: Docker Compose (Docker Inc.)
    Version:  v2.28.1-desktop.1
    Path:     C:\Program Files\Docker\cli-plugins\docker-compose.exe
  debug: Get a shell into any image or container (Docker Inc.)
    Version:  0.0.32
    Path:     C:\Program Files\Docker\cli-plugins\docker-debug.exe
  desktop: Docker Desktop commands (Alpha) (Docker Inc.)
    Version:  v0.0.14
    Path:     C:\Program Files\Docker\cli-plugins\docker-desktop.exe
  dev: Docker Dev Environments (Docker Inc.)
    Version:  v0.1.2
    Path:     C:\Program Files\Docker\cli-plugins\docker-dev.exe
  extension: Manages Docker extensions (Docker Inc.)
    Version:  v0.2.25
    Path:     C:\Program Files\Docker\cli-plugins\docker-extension.exe
  feedback: Provide feedback, right in your terminal! (Docker Inc.)
    Version:  v1.0.5
    Path:     C:\Program Files\Docker\cli-plugins\docker-feedback.exe
  init: Creates Docker-related starter files for your project (Docker Inc.)
    Version:  v1.3.0
    Path:     C:\Program Files\Docker\cli-plugins\docker-init.exe
  sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc.)
    Version:  0.6.0
    Path:     C:\Program Files\Docker\cli-plugins\docker-sbom.exe
  scout: Docker Scout (Docker Inc.)
    Version:  v1.10.0
    Path:     C:\Program Files\Docker\cli-plugins\docker-scout.exe

Server:
 Containers: 18
  Running: 3
  Paused: 0
  Stopped: 15
 Images: 16
 Server Version: 27.0.3
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: ae71819c4f5e67bb4d5ae76a6b735f29cc25774e
 runc version: v1.1.13-0-g58aa920
 init version: de40ad0
 Security Options:
  seccomp
   Profile: unconfined
 Kernel Version: 5.15.146.1-microsoft-standard-WSL2
 Operating System: Docker Desktop
 OSType: linux
 Architecture: x86_64
 CPUs: 16
 Total Memory: 5.789GiB
 Name: docker-desktop
 ID: 93837cf5-3fa5-4ef6-b524-ffe0f864d998
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: http.docker.internal:3128
 HTTPS Proxy: http.docker.internal:3128
 No Proxy: hubproxy.docker.internal
 Labels:
  com.docker.desktop.address=npipe://\\.\pipe\docker_cli
 Experimental: false
 Insecure Registries:
  hubproxy.docker.internal:5555
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: No blkio throttle.read_bps_device support
WARNING: No blkio throttle.write_bps_device support
WARNING: No blkio throttle.read_iops_device support
WARNING: No blkio throttle.write_iops_device support
WARNING: daemon is not using the default seccomp profile

Diagnostics ID

209F3B5D-7998-4AF9-89BD-2F6C742F405B/20240705160933

Additional Info

No response

[bsousaa]

cc @dvdksn

[dvdksn]

PTAL @aevesdocker

[Davilink]

I see that the tag kind/docs has been added but i wonder is it that correct tag, IMHO it sound like it a bug in the docker desktop on windows that doesn't mount the secret with the correct permission.

[Davilink]

To add some context, i try to use the container has "devcontainer" and my stack use laravel with the composer (dependency manager) and one of our package require to clone a repo from bitbucket using our ssh key, that's what prompted me to try to use the secrets mecanism of docker.

[Davilink]

I guess in the mean i will fallback to using environment variable....