# Multi-stage build for SvelteKit app (environment-agnostic)

# Stage 1: Build
FROM node:24.13.1-alpine AS builder

WORKDIR /app

COPY package*.json ./
RUN npm ci

COPY . .
RUN npm run build

# Stage 2: Production
FROM node:24.13.1-alpine

WORKDIR /app

RUN npm install -g pm2

COPY package*.json ./
RUN npm ci --only=production && npm cache clean --force

COPY --from=builder /app/build ./build
COPY --from=builder /app/ecosystem.config.cjs ./ecosystem.config.cjs

RUN mkdir -p logs

# Default port; override with PORT env in compose or .env
ENV NODE_ENV=production
ENV HOST=0.0.0.0
ARG PORT=3001
ENV PORT=${PORT}

EXPOSE ${PORT}

HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node -e "require('http').get('http://localhost:' + (process.env.PORT || 3001), (r) => { process.exit(r.statusCode === 200 ? 0 : 1); })"

CMD ["pm2-runtime", "start", "ecosystem.config.cjs"]