From 2161db53c9be02e4bed6e72859d9f06b7993041d Mon Sep 17 00:00:00 2001
From: Devansh Lodha <devanshlodha12@gmail.com>
Date: Thu, 29 Jan 2026 20:17:54 +0530
Subject: [PATCH] fix(devcontainer): remove broken yarn apt source to fix build
 (#3490)

This change introduces a Dockerfile to the devcontainer configuration
that removes the broken Yarn repository from `/etc/apt/sources.list.d/`.
This prevents `apt-get update` from failing due to an expired or missing
GPG key for the Yarn repository.

Fixes #3487
---
 .devcontainer/Dockerfile        | 7 +++++++
 .devcontainer/devcontainer.json | 5 ++++-
 2 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 .devcontainer/Dockerfile

diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
new file mode 100644
index 0000000..e511a1b
--- /dev/null
+++ b/.devcontainer/Dockerfile
@@ -0,0 +1,7 @@
+FROM mcr.microsoft.com/devcontainers/jekyll
+
+# Fix: Remove the broken Yarn repository from the apt sources.
+# This prevents 'apt-get update' from failing due to the missing GPG key.
+# (Yarn is already provided by the dev container features/nvm, so this system repo is unnecessary)
+# See issue #3487
+RUN rm -f /etc/apt/sources.list.d/yarn.list
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 46bd1ed..041b0e9 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -2,7 +2,10 @@
 // README at: https://github.com/devcontainers/templates/tree/main/src/jekyll
 {
   "name": "Jekyll",
-  "image": "mcr.microsoft.com/devcontainers/jekyll",
+  // Using a Dockerfile to fix the broken Yarn repository. See issue #3487.
+  "build": {
+    "dockerfile": "Dockerfile"
+  },
 
   // Features to add to the dev container. More info: https://containers.dev/features.
   "features": {