# Build stage
FROM node:22-alpine AS builder

WORKDIR /app

# Copy dependency files first for better layer caching
COPY package*.json ./
RUN npm ci

# Copy source code and build the static SPA
COPY . .
RUN npm run build

# Runtime stage
FROM nginx:alpine

# Copy the built static files to nginx's default document root
COPY --from=builder /app/build /usr/share/nginx/html

# Copy nginx configuration
COPY nginx.conf /etc/nginx/conf.d/default.conf

# Expose the port nginx listens on
EXPOSE 80

# Run nginx in the foreground
CMD ["nginx", "-g", "daemon off;"]