Keep your team inside Dev Containers. This lightweight extension looks for an ancestor .devcontainer folder and:
If inside a dev-container → does nothing.
If the opened folder is .devcontainer → does nothing.
If an ancestor .devcontainer exists → shows an info message to “Reopen in Container”.
Otherwise → shows a modal with two choices:
Close (default)
Disable once (requires typing an exact phrase)
The “Disable once” override is in-memory only (per VS Code window); it resets on reload.
Note: The repository URL points to a “-free” repo that’s intentionally empty and used only for issues/feedback.
Install
From VSIX: download the .vsix and install via “Extensions” → “…” → “Install from VSIX…”.
From Marketplace: search for “DevContainer Enforcer” (coming soon).
Usage
Open a project. If a .devcontainer exists anywhere up the tree, you’ll be nudged to use Dev Containers. If not, you’ll be prompted to close or type the confirmation phrase to proceed once.
Development
Dev compile (no esbuild):
npm run dev
Run the extension:
Press F5 (Run and Debug → “Run Extension”).
Type check:
npm run typecheck
Build & Package
Production bundle (obfuscated, no sourcemaps) and package to VSIX:
