Add newline at EOF to `devcontainer-lock.json`

[sdavids]

.devcontainer/devcontainer-lock.json has to be explicitly ignored if you use Prettier.

This is sad because a lot of projects use it …

[sdavids]

Ensure dev.containers.experimentalLockfile is set to true in your VS Code user settings.

$ mkdir -p /tmp/test/.devcontainer && cd "$_/.."
$ npm init -y >/dev/null
$ npm i -Ds prettier@3.5.3
$ echo '{"image":"mcr.microsoft.com/devcontainers/javascript-node","features":{"ghcr.io/devcontainers/features/common-utils:2":{}}}' >.devcontainer/devcontainer.json
$ npx prettier --write . >/dev/null
$ echo 'node_modules/' >.gitignore
$ git init -q
$ git config set user.email "you@example.com"
$ git config set user.name "Your Name"
$ git add -A
$ git commit -q -m initial
$ code .

“Reopen in Container”

$ git status -s
?? .devcontainer/devcontainer-lock.json
$ git add -A
$ git commit -q -m lock
$ npx prettier --write . >/dev/null
$ git diff
diff --git i/.devcontainer/devcontainer-lock.json w/.devcontainer/devcontainer-lock.json
index 4949bae..18f8135 100644
--- i/.devcontainer/devcontainer-lock.json
+++ w/.devcontainer/devcontainer-lock.json
@@ -6,4 +6,4 @@
       "integrity": "sha256:3cf7ca93154faf9bdb128f3009cf1d1a91750ec97cc52082cf5d4edef5451f85"
     }
   }
-}
\ No newline at end of file
+}

[sireeshajonnalagadda]

Hi @sdavids,
Thank you for reporting this issue!

I followed the steps you provided, but I did not observe the untracked files in the git status output, which indicates that the devcontainer-lock.json file is not being ignored. Specifically, when running git status -s, I did not encounter the following output:

?? .devcontainer/devcontainer-lock.json

Could you please provide further details or clarification on the issue? This would be helpful in resolving the matter.

Thanks,
Sireesha

[sdavids]

Ensure dev.containers.experimentalLockfile is set to true in your VS Code user settings.

I guess you forgot 👆

Also check that you do not have devcontainer-lock.json, .devcontainer/devcontainer-lock.json, or something similar in your global gitignore.

Also check that you installed the Dev Containers extension and that is enabled.

---

.devcontainer/devcontainer-lock.json is created by the Dev Containers VS Code extension.