feat: add Dockerfile, captain-definition, and production-ready Nginx configuration for deployment

Dockerfile

@@ -0,0 +1,26 @@
+# ── Stage 1: Build ──────────────────────────────────────────────
+FROM node:22-alpine AS builder
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci
+
+COPY . .
+RUN npm run build
+
+# ── Stage 2: Serve ──────────────────────────────────────────────
+FROM nginx:stable-alpine
+
+# Remove default nginx static assets
+RUN rm -rf /usr/share/nginx/html/*
+
+# Copy built output from builder
+COPY --from=builder /app/dist /usr/share/nginx/html
+
+# nginx config — SPA-friendly: route all 404s back to index.html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]

captain-definition

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+{
+  "schemaVersion": 2,
+  "dockerfilePath": "./Dockerfile"
+}

nginx.conf

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+server {
+    listen       80;
+    server_name  _;
+
+    root   /usr/share/nginx/html;
+    index  index.html;
+
+    # Gzip
+    gzip on;
+    gzip_types text/plain text/css application/javascript application/json image/svg+xml;
+    gzip_min_length 1024;
+
+    # Cache static assets aggressively (Vite hashes filenames)
+    location ~* \.(?:js|css|woff2?|png|jpg|jpeg|webp|svg|ico)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    # SPA fallback — always serve index.html for unknown routes
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+}