# STAGE 1: Build the React application
FROM node:20-alpine AS build

WORKDIR /app

# Copy package files and install dependencies
COPY package.json package-lock.json ./
RUN npm install

# Copy the rest of the application source code
COPY . .

# Build the application for production
RUN npm run build

# STAGE 2: Serve the static files with Nginx
FROM nginx:alpine

# Copy the built files from the build stage
COPY --from=build /app/dist /usr/share/nginx/html

# Copy our custom Nginx configuration
# This config is for a Single Page Application (SPA) and listens on port 8080 for Cloud Run
RUN echo 'server { 
    listen 8080; 
    server_name _; 
    root /usr/share/nginx/html; 
    index index.html; 
    location / { 
        try_files $uri $uri/ /index.html; 
    }
}' > /etc/nginx/conf.d/default.conf

# Expose the port Nginx is listening on
EXPOSE 8080

# Command to run Nginx in the foreground
CMD ["nginx", "-g", "daemon off;"]