Dockerfile

FROM node:20-alpine AS base
WORKDIR /app

# Copy package files
COPY package*.json ./

FROM base AS deps
# Install dependencies (production only)
RUN npm ci --only=production

FROM base AS build
# Install all dependencies (including dev dependencies)
RUN npm ci

# Copy source code
COPY . .

# Build the application
RUN npm run build

FROM node:20-alpine AS runtime
WORKDIR /app

# Install curl for healthcheck
RUN apk add --no-cache curl

# Create a non-root user for security
RUN addgroup -g 1001 -S nodejs
RUN adduser -S astro -u 1001

# Copy built application from build stage
COPY --from=build /app/dist ./dist
COPY --from=build /app/package*.json ./

# Copy production dependencies from deps stage
COPY --from=deps /app/node_modules ./node_modules

# Change ownership to non-root user
RUN chown -R astro:nodejs /app

# Set environment variables
ENV HOST=0.0.0.0
ENV PORT=8517
ENV NODE_ENV=production

# Switch to non-root user
USER astro

# Expose the port (can be overridden by docker-compose.yml)
EXPOSE $PORT

# Run the built application
# The standalone Node.js server respects HOST and PORT environment variables
CMD ["node", "./dist/server/entry.mjs"]