# Use node-alpine but add necessary build tools
FROM node:20-alpine AS builder

# 1. Install openssl and libc6-compat (required for Prisma on Alpine)
RUN apk add --no-cache openssl libc6-compat

WORKDIR /app

COPY package*.json ./

# 2. Install dependencies (make sure prisma is in your package.json)
RUN npm ci

COPY . .

# 3. Generate Prisma Client during build time 
# This bakes the engine into the image so 'npx' doesn't try to download it later
RUN npx prisma generate

RUN npm run build

# --- Runner Stage ---
FROM node:20-alpine AS runner

# 4. Must also install openssl in the runner stage!
RUN apk add --no-cache openssl libc6-compat

WORKDIR /app

# Copy everything from builder
COPY --from=builder /app /app

EXPOSE 3000

# This is the command that the migration service or backend will use
CMD ["npm", "start"]