diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 00000000000000..39bbd2681d703a
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,4 @@
+{
+  "image": "mcr.microsoft.com/devcontainers/universal:2",
+  "features": {}
+}
diff --git a/CNAME b/CNAME
new file mode 100644
index 00000000000000..13b2ae19e6f57e
--- /dev/null
+++ b/CNAME
@@ -0,0 +1 @@
+chromium.googlesource.com
\ No newline at end of file
diff --git a/pnpm b/pnpm
new file mode 100644
index 00000000000000..08423da6c5e603
--- /dev/null
+++ b/pnpm
@@ -0,0 +1,20 @@
+# Docker has specific installation instructions for each operating system.
+# Please refer to the official documentation at https://docker.com/get-started/
+
+# Pull the Node.js Docker image:
+docker pull node:26-slim
+
+# Create a Node.js container and start a Shell session:
+docker run -it --rm --entrypoint sh node:26-slim
+
+# Verify the Node.js version:
+node -v # Should print "v26.2.0".
+
+# Install Corepack:
+npm install -g corepack
+
+# Download and install pnpm:
+corepack enable pnpm
+
+# Verify pnpm version:
+pnpm -v