chore: fallback if curl call fails

Author: gagik

.evergreen/evergreen.yml.in

@@ -329,9 +329,9 @@ functions:
         script: |
           set -e
           {
-          # Fetch Node.js version from VS Code's .nvmrc to ensure we test with the same version
-          NODE_JS_VERSION=$(curl -fsSL https://raw.githubusercontent.com/microsoft/vscode/refs/heads/main/.nvmrc | tr -d '[:space:]')
-          echo "Using Node.js version from VS Code .nvmrc: ${NODE_JS_VERSION}"
+          # Fetch Node.js version from VS Code's .nvmrc, default to 22.20.0 if unavailable
+          NODE_JS_VERSION=$(curl -fsSL https://raw.githubusercontent.com/microsoft/vscode/refs/heads/main/.nvmrc | tr -d '[:space:]' || echo "22.20.0")
+          echo "Using Node.js version for VS Code extension tests: ${NODE_JS_VERSION}"
           (cd scripts/docker && docker build --build-arg NODE_JS_VERSION="${NODE_JS_VERSION}" -t ubuntu24.04-xvfb -f ubuntu24.04-xvfb.Dockerfile .)
           docker run \
             --rm -v $PWD:/tmp/build ubuntu24.04-xvfb \

scripts/docker/ubuntu24.04-xvfb.Dockerfile

@@ -1,6 +1,9 @@
 FROM ubuntu:24.04
 
 ARG NODE_JS_VERSION
+
+RUN if [ -z "$NODE_JS_VERSION" ]; then echo "Error: NODE_JS_VERSION is not defined"; exit 1; fi
+
 ENV NODE_JS_VERSION=${NODE_JS_VERSION}
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update