Add Docker environment for index.html

- Add Dockerfile with nginx Alpine for serving static HTML
- Add docker-compose.yml with port 8080 mapping
- Add .dockerignore to exclude unnecessary files
- Ready for development and production deployment

Co-authored-by: Sunwood-ai-labs <Sunwood-ai-labs@users.noreply.github.com>

.dockerignore

@@ -0,0 +1,17 @@
+# Git files
+.git
+.gitignore
+
+# Documentation
+README.md
+CLAUDE.md
+
+# Docker files
+Dockerfile
+docker-compose.yml
+.dockerignore
+
+# Development files
+.vscode
+.idea
+*.log

Dockerfile

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+# Use nginx to serve static HTML files
+FROM nginx:alpine
+
+# Remove default nginx website
+RUN rm -rf /usr/share/nginx/html/*
+
+# Copy our HTML file and assets to nginx directory
+COPY index.html /usr/share/nginx/html/
+COPY assets/ /usr/share/nginx/html/assets/
+
+# Expose port 80
+EXPOSE 80
+
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]

docker-compose.yml

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+version: '3.8'
+
+services:
+  icon-sheet-splitter:
+    build: .
+    ports:
+      - "8080:80"
+    container_name: icon-sheet-splitter-app
+    restart: unless-stopped
+    volumes:
+      # Optional: Mount local files for development
+      - ./index.html:/usr/share/nginx/html/index.html:ro
+      - ./assets:/usr/share/nginx/html/assets:ro
+
+networks:
+  default:
+    name: icon-sheet-splitter-network