Dockerfile.backend

# ─────────────────────────────────────────────────────────────────────────────
# Stage 1: deps — install production-only dependencies
# ─────────────────────────────────────────────────────────────────────────────
FROM node:22-alpine AS deps
WORKDIR /app

COPY backend/package*.json ./
RUN npm install --omit=dev

# ─────────────────────────────────────────────────────────────────────────────
# Stage 2: builder — install all deps, generate Prisma client, compile TS
# ─────────────────────────────────────────────────────────────────────────────
FROM node:22-alpine AS builder
WORKDIR /app

COPY backend/package*.json ./
RUN npm install

# Copy Prisma schema and config first so generate can run before full src copy
COPY backend/prisma ./prisma
COPY backend/prisma.config.ts ./
RUN DATABASE_URL="mysql://placeholder:placeholder@localhost:3306/placeholder" npx prisma generate

# Copy source and build
COPY backend/tsconfig.json ./
COPY backend/src ./src
RUN npm run build

# ─────────────────────────────────────────────────────────────────────────────
# Stage 3: runner — lean production image
# ─────────────────────────────────────────────────────────────────────────────
FROM node:22-alpine AS runner
WORKDIR /app

# Create non-root user
RUN addgroup -g 1001 -S nodejs && adduser -S fastify -u 1001

# Production node_modules from deps stage
COPY --from=deps /app/node_modules ./node_modules

# Overlay the generated Prisma client (produced in builder, not in deps)
COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma
COPY --from=builder /app/node_modules/@prisma/client ./node_modules/@prisma/client

# Prisma CLI is a devDep — copy it so CMD can run `prisma migrate deploy`
COPY --from=builder /app/node_modules/prisma ./node_modules/prisma
COPY --from=builder /app/node_modules/.bin/prisma ./node_modules/.bin/prisma

# Application artifacts
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/prisma ./prisma
COPY --from=builder /app/prisma.config.ts ./

# cdn/ is the default filesystem upload directory (STORAGE_PATH=./cdn/).
# Mount a named volume here when STORAGE_DRIVER=filesystem in production.
# Skip the volume mount entirely when using STORAGE_DRIVER=s3 or cloudinary.
RUN mkdir -p cdn && chown -R fastify:nodejs cdn /app

USER fastify

EXPOSE 5000

# Run migrations then start the server
CMD ["sh", "-c", "node_modules/.bin/prisma migrate deploy && node dist/server.js"]