deployment files

Dockerfile

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+# Stage 1: Build
+FROM node:20-alpine AS builder
+
+# Set working directory
+WORKDIR /app
+
+# Copy package.json and package-lock.json (or yarn.lock)
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Copy the rest of the app
+COPY . .
+
+# Build arguments
+ARG VITE_WS_HOST
+ARG VITE_WS_PORT
+ARG VITE_WS_SKEY
+
+# Export them as actual environment variables (Vite needs ENV)
+ENV VITE_WS_HOST=${VITE_WS_HOST}
+ENV VITE_WS_PORT=${VITE_WS_PORT}
+ENV VITE_WS_SKEY=${VITE_WS_SKEY}
+
+# Build
+RUN npm run build
+
+# Stage 2: Static file server (BusyBox)
+FROM busybox:latest
+
+WORKDIR /app
+
+# Copy only build frontend files
+COPY --from=builder /app/dist /app
+
+# Expose port
+EXPOSE 3000
+
+# Default command
+CMD ["busybox", "httpd", "-f", "-p", "3000"]