Enhancement: Add Node.js and npm to the Dockerfile and update CLAUDE.md documentation

Signed-off-by: Ihor Dvoretskyi <ihor@linux.com>

Author: idvoretskyi

.devcontainer/Dockerfile

@@ -8,6 +8,8 @@ RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
         jq \
         build-essential \
         openssh-server \
+        nodejs \
+        npm \
     && apt-get clean -y \
     && rm -rf /var/lib/apt/lists/*
 

.gitignore

@@ -2,6 +2,10 @@
 .DS_Store
 Thumbs.db
 
+# Claude Code configuration (template-specific)
+CLAUDE.md
+.claude/
+
 # Editor directories and files
 .idea/
 .vscode/*

CLAUDE.md

@@ -17,7 +17,7 @@ This is a generic GitHub Codespace/devcontainer template repository that provide
 ## Key Components
 
 - `.devcontainer/devcontainer.json`: Main devcontainer configuration using Docker Compose with features, VS Code extensions, and settings
-- `.devcontainer/Dockerfile`: Custom Ubuntu image with essential development packages (curl, wget, jq, build-essential, openssh-server)
+- `.devcontainer/Dockerfile`: Custom Ubuntu image with essential development packages (curl, wget, jq, build-essential, openssh-server, nodejs, npm)
 - `.devcontainer/docker-compose.yml`: Container orchestration with volume mounts and SSH port forwarding
 
 ## Common Commands
@@ -27,6 +27,7 @@ The environment includes these pre-configured tools:
 - Docker and Docker Compose (via docker-in-docker)
 - Kubernetes tools: kubectl, helm, minikube
 - GitHub CLI (gh)
+- Node.js, npm, and npx
 - SSH server (automatically started on port 22)
 
 ## VS Code Configuration