feat: Add Dockerfile and simplify install script

- Add a Dockerfile for easy building and running of the application.
- Simplify the install.sh script by removing unnecessary steps and
  hardcoded values.  The installation of Tailwind CSS and Shadcn UI
  is now handled within the application.  This allows for greater
  flexibility and simplifies the process.
- Use environment variables for HOST and PORT, providing defaults.

Dockerfile

@@ -0,0 +1,24 @@
+# Use a base image with Bun
+FROM oven/bun:latest
+
+# Set working directory
+WORKDIR /app
+
+# Copy the entire project
+COPY . .
+
+# Make the scripts executable
+RUN chmod +x install.sh run.sh
+
+# Run the install script to set up dependencies
+RUN ./install.sh
+
+# Set environment variables with defaults
+ENV HOST=0.0.0.0
+ENV PORT=3000
+
+# Expose the port
+EXPOSE ${PORT}
+
+# Run the application
+CMD ["./run.sh"]