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docker logout docker.io does not remove Docker Hub credentials #7326
Description
Description
For Docker Hub, docker login canonicalizes docker.io to https://index.docker.io/v1/, while docker logout does not appear to apply the same canonicalization logic.
For example, when a user explicitly logs in with:
docker login docker.iothe credentials are stored in config.json under the canonical Docker Hub key:
{
"auths": {
"https://index.docker.io/v1/": {
"auth": "..."
}
}
}However, when the user explicitly logs out with:
docker logout docker.iothe logout logic attempts to remove credentials associated with docker.io from config.json.
Since the credentials were actually stored under https://index.docker.io/v1/, no matching docker.io entry exists, so the stored Docker Hub credentials are not removed.
In other words, docker login docker.io and docker logout docker.io use inconsistent registry host normalization for Docker Hub.
docker login docker.io and docker logout docker.io use inconsistent registry host normalization for Docker Hub.
Reproduce
- Run
docker login docker.ioand authenticate successfully. - Check
~/.docker/config.jsonand verify that the credentials are stored underhttps://index.docker.io/v1/. - Run
docker logout docker.io. - Check
~/.docker/config.jsonagain. - Observe that the Docker Hub credentials under
https://index.docker.io/v1/are still present.
Expected behavior
Running docker logout docker.io should remove the Docker Hub credentials stored under https://index.docker.io/v1/.
docker version
Client:
Version: 29.8.0
API version: 1.56
Go version: go1.26.8
Git commit: 88096ef
Built: Thu Sep 3 21:53:38 2026
OS/Arch: windows/amd64
Context: desktop-linux
failed to connect to the docker API at npipe:////./pipe/dockerDesktopLinuxEngine; check if the path is correct and if the daemon is running: open //./pipe/dockerDesktopLinuxEngine: The system cannot find the file specified.docker info
Client:
Version: 29.8.0
Context: desktop-linux
Debug Mode: false
Plugins:
agent: Docker AI Agent Runner (Docker Inc.)
Version: v1.136.0
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-agent.exe
ai: Docker AI Agent - Ask Gordon (Docker Inc.)
Version: v1.31.0
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-ai.exe
buildx: Docker Buildx (Docker Inc.)
Version: v0.37.0
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-buildx.exe
compose: Docker Compose (Docker Inc.)
Version: v5.5.1
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-compose.exe
debug: Get a shell into any image or container (Docker Inc.)
Version: 0.0.47
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-debug.exe
desktop: Docker Desktop commands (Docker Inc.)
Version: v0.4.4
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-desktop.exe
dhi: CLI for managing Docker Hardened Images (Docker Inc.)
Version: v0.0.7
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-dhi.exe
extension: Manages Docker extensions (Docker Inc.)
Version: v0.2.31
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-extension.exe
init: Creates Docker-related starter files for your project (Docker Inc.)
Version: v1.4.0
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-init.exe
mcp: Docker MCP Plugin (Docker Inc.)
Version: v0.43.3
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-mcp.exe
model: Docker Model Runner (Docker Inc.)
Version: v1.2.6
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-model.exe
offload: Docker Offload (Docker Inc.)
Version: v0.6.17
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-offload.exe
pass: Docker Pass Secrets Manager Plugin (beta) (Docker Inc.)
Version: v0.2.2
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-pass.exe
sandbox: "docker sandbox" is deprecated, use Docker Sandboxes instead (Docker Inc.)
Version: v0.13.0
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-sandbox.exe
scout: Docker Scout (Docker Inc.)
Version: v1.24.0
Path: C:\Users\yin2hao\.docker\cli-plugins\docker-scout.exe
Server:
failed to connect to the docker API at npipe:////./pipe/dockerDesktopLinuxEngine; check if the path is correct and if the daemon is running: open //./pipe/dockerDesktopLinuxEngine: The system cannot find the file specified.Additional Info
No response
Activity
yin2hao commentedon Oct 7, 2026
I noticed that PR #7213 already contains a fix for this issue. Sorry for not noticing the relevant information earlier.