# Dockerfile for Astro webapp
# Use official Node.js image as the base
FROM node:20-alpine as build

# Set working directory
WORKDIR /app

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

# Copy the rest of the application code
COPY . .

# Build the Astro project
RUN npm run build

# Production image
FROM node:20-alpine as prod
WORKDIR /app

# Install only production dependencies
COPY package.json package-lock.json ./
RUN npm ci --omit=dev

# Copy built files from build stage
COPY --from=build /app/dist ./dist
COPY public ./public

# Expose Astro's default port
EXPOSE 4321

# Start the Astro preview server
CMD ["npx", "astro", "preview"]