Congrats, you have managed to break dev containers AGAIN!

Support Bug Reports
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Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Congrats, you have managed to break dev containers AGAIN!

Steps to Reproduce

Failed to install Cursor server: Failed to run devcontainer command: 1. {“outcome”:“error”,“message”:“Command failed: docker compose --project-name myproject_backend_original -f /home/sepehr/workspace/myproject-backend/.devcontainer/docker-compose.yml -f /tmp/devcontainercli-sepehr/docker-compose/docker-compose.devcontainer.build-1771781292837.yml build”,“description”:“An error occurred building the Docker Compose images.”}

Expected Behavior

For dev container to work properly

Operating System

Windows 10/11

Version Information

Version: 2.5.20 (user setup)
VSCode Version: 1.105.1
Commit: 511523af765daeb1fa69500ab0df5b6524424610
Date: 2026-02-19T20:41:31.942Z
Build Type: Stable
Release Track: Early Access
Electron: 39.4.0
Chromium: 142.0.7444.265
Node.js: 22.22.0
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

Yes - Cursor is unusable

4

Hey, here are a few things worth checking to narrow this down:

  1. Which Dev Containers extension do you have installed? You need anysphere.remote-containers, not the Microsoft one ms-vscode-remote.remote-containers. If you have the MS version, uninstall it, install the Anysphere one, and restart Cursor.

  2. Can you share the full Dev Containers logs? Open View > Output, then pick Dev Containers from the dropdown. The error you shared doesn’t show what actually failed during the Docker Compose build.

  3. Does this same devcontainer config work in VS Code right now?

  4. What version were you on before the update? You mentioned “AGAIN” so when was the last time it worked for you?

Quick thing to try: open the Command Palette Ctrl+Shift+P and run Dev Containers: Rebuild Without Cache and Reopen in Container. This has helped some users with similar Docker Compose build failures.

8

Hey there!

Please be mindful of our Forum Guidelines when posting. Please edit the title and content of your post.

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