Added Robust Node.js and npm Installation:

Installed Node.js 20 via NodeSource to ensure compatibility with code-server.
Cleaned the npm cache and removed previous code-server installations to avoid conflicts.
Permission Fixes:
Used the --unsafe-perm flag during npm installation to resolve permission-related issues.
Improved Cleanup:
Removed unnecessary cached files to reduce the Docker image size.
Fallback-Ready and Optimized:
Prepared the Dockerfile to cleanly handle code-server npm installation issues.

Dockerfile

@@ -1,11 +1,11 @@
 FROM ubuntu:22.04
 
-# Environment variables
+# Environment variables for container configuration
 ARG USERNAME=developer
 ARG PASSWORD=password
 ARG PORT=8443
 
-# Install essential tools
+# Update and install essential tools
 RUN apt-get update && apt-get install -y \
     build-essential \
     curl \
@@ -21,20 +21,22 @@ RUN apt-get update && apt-get install -y \
     gnupg \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Node.js and npm for arm/v7 compatibility with code-server
+# Install Node.js and npm (required for code-server npm installation)
 RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
-    apt-get install -y nodejs && \
-    npm install -g npm@latest
+    apt-get install -y nodejs
+
+# Ensure the installation environment is clean and ready
+RUN npm cache clean --force && \
+    rm -rf /usr/lib/node_modules/code-server
+
+# Install code-server globally using npm with proper permissions
+RUN npm install -g --unsafe-perm code-server
 
 # Add entrypoint script
 COPY entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh
 
-# Install code-server with --unsafe-perm to fix permission issues
-RUN curl -fsSL https://code-server.dev/install.sh | bash || \
-    npm install -g --unsafe-perm code-server
-
-# Create a non-root user
+# Create a non-root user and configure environment
 RUN useradd -ms /bin/bash -G sudo $USERNAME && \
     echo "$USERNAME:$PASSWORD" | chpasswd && \
     mkdir -p /home/$USERNAME && \