Add Docker support and implement Bun for dependency management

- Introduced .dockerignore to exclude unnecessary files from Docker context.
- Updated Dockerfile to use Bun for building and running the application.
- Removed entrypoint.sh as it is no longer needed.
- Modified build-and-dockerise.yml to set up Bun and install dependencies.
- Enhanced index.html with improved structure and hover effects.
- Updated client.ts to include tooltips for music display.
- Implemented caching in server.ts for Last.fm data.
- Added custom styles for hover effects and tooltips in style.css.

Dockerfile

@@ -1,11 +1,37 @@
-FROM nginx:latest
+# Build stage
+FROM oven/bun:latest as builder
 
-COPY dist /usr/share/nginx/html
-COPY entrypoint.sh /entrypoint.sh
+WORKDIR /app
 
-RUN chmod +x /entrypoint.sh
+# Copy package files
+COPY package.json bun.lock* ./
 
-ENTRYPOINT ["/entrypoint.sh"]
+# Install all dependencies (including devDependencies for building)
+RUN bun install --frozen-lockfile
 
-STOPSIGNAL SIGQUIT
-CMD ["nginx", "-g", "daemon off;"]
+# Copy source code
+COPY . .
+
+# Build the application
+RUN bun run build
+
+# Production stage
+FROM oven/bun:latest
+
+WORKDIR /app
+
+# Copy package files
+COPY package.json bun.lock* ./
+
+# Install only production dependencies
+RUN bun install --frozen-lockfile --production
+
+# Copy built application and server
+COPY --from=builder /app/dist ./dist
+COPY src/server.ts ./src/server.ts
+
+# Expose the port
+EXPOSE 3000
+
+# Start the application
+CMD ["bun", "run", "prod"]