Add Docker support

.dockerignore

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+node_modules/
+dist/
+.git/
+.gitignore
+*.md

Dockerfile

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+FROM node:20-alpine AS build
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+FROM nginx:alpine
+COPY --from=build /app/dist /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]

nginx.conf

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+server {
+    listen 80;
+    server_name _;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    location ~* \.(jpg|jpeg|png|gif|ico|svg|webp|css|js|woff2?)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+}