Dockerfile inlay hints blocks other LSP requests

[buymeasoda]

The new inlay hint feature implemented in #431 (or something related) to show when an image was last pushed appears to block other Docker DX extension completions while it is being processed and resolved.

• Editor: VS Code (Version: 1.103.2)
• Extension: Docker DX (Version: 0.16.0)

To reproduce:

• Shut down VS Code completely
• Create and open an empty Dockerfile in VS Code
• Add a FROM <image> line (eg. FROM golang:latest or FROM php:8.3-apache etc) and hit enter
• Type the first letter of another Dockerfile command on the new line (eg. ADD, CMD etc)
• Observe the inline suggestion spinner for Docker in status bar
• Observe that no inline editor completion is able to be displayed for the new command

(See attached video for the reproduction steps in action)

The issue will persist until the "last pushed" message is finally returned and rendered inline in the editor (which can take a while in some instances). During this time all other edit completions provided by Docker DX are unusable.

• Are others able to reproduce this issue? And is there a way to either make this call async so that it is non-blocking or add an option to be able to disable it?

Excerpt from Docker Language Server logs:

[Trace - 19:10:35] Received response 'textDocument/inlayHint - (4)' in 17607ms.
Result: [
    {
        "position": {
            "line": 0,
            "character": 18
        },
        "label": "(last pushed 1 week ago)",
        "textEdits": null,
        "tooltip": "2025-08-25 12:23:20 AEST",
        "paddingLeft": true
    }
]

docker-issue.mov

[buymeasoda]

I'm also not sure if this issue is more relevant to the Docker Language Server or Docker DX Extension side - so please let me know if I should share this feedback via the Docker DX extension repo instead 😊

[rcjsuen]

Are others able to reproduce this issue?

Yes, I can. Thank you for the detailed report and for the video. I can see it on my end as well.

And is there a way to either make this call async so that it is non-blocking or add an option to be able to disable it?

Since you are using Visual Studio Code, you can use the following JSON snippet in your settings.json file to disable inlay hints for Dockerfiles. Does that help? In the meantime, we will look into how to make the internals asynchronous.

{
    "[dockerfile]": {
        "editor.inlayHints.enabled": "off"
    }
}

I'm also not sure if this issue is more relevant to the Docker Language Server or Docker DX Extension side - so please let me know if I should share this feedback via the Docker DX extension repo instead 😊

You shared this at the right place. No worries! 👍