Add Docker support with Alpine Linux

- Multi-stage Dockerfile with rust:alpine and nginx:alpine
- Optimized for small container size (~20MB)
- Includes SPA routing support and gzip compression
- Health check for container monitoring
- .dockerignore to optimize build context

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.dockerignore

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+# Build artifacts
+target/
+dist/
+
+# Git
+.git/
+.gitignore
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+
+# Documentation
+README.md
+*.md
+
+# Docker
+Dockerfile
+.dockerignore

Dockerfile

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+# Build stage
+# ---------------------------------------
+FROM rust:alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache \
+    musl-dev \
+    pkgconfig \
+    openssl-dev \
+    nodejs \
+    npm
+
+# Install trunk for building Yew apps
+RUN cargo install trunk wasm-pack
+
+# Add wasm32 target
+RUN rustup target add wasm32-unknown-unknown
+
+# Set working directory
+WORKDIR /app
+
+# Copy dependency files
+COPY Cargo.toml ./
+COPY src ./src
+
+# Copy web assets
+COPY index.html ./
+COPY Trunk.toml ./
+
+# Build the application
+RUN trunk build --release
+
+
+
+# Runtime stage
+# ---------------------------------------
+FROM docker.io/nginx:alpine
+
+# Remove default nginx content
+RUN rm -rf /usr/share/nginx/html/*
+
+# Copy built application from builder stage
+COPY --from=builder /app/dist/* /usr/share/nginx/html/
+
+# Add nginx configuration for SPA
+RUN echo 'server { \
+    listen 80; \
+    server_name localhost; \
+    root /usr/share/nginx/html; \
+    index index.html; \
+    location / { \
+        try_files $uri $uri/ /index.html; \
+    } \
+    # Enable gzip compression \
+    gzip on; \
+    gzip_types text/css application/javascript application/wasm; \
+}' > /etc/nginx/conf.d/default.conf
+
+# Expose port
+EXPOSE 80
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD wget --quiet --tries=1 --spider http://localhost/ || exit 1
+
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]