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Dockerfile

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+# syntax=docker/dockerfile:1
+
+# ---- deps: instala todas as dependências (inclui dev, precisa pra build) ----
+FROM node:20-alpine AS deps
+# python3/make/g++: precisos para compilar o binding nativo do `argon2`
+# (não há prebuild musl/Alpine para todas as versões/arquiteturas).
+RUN apk add --no-cache openssl python3 make g++
+WORKDIR /app
+COPY package*.json ./
+COPY prisma ./prisma
+RUN npm ci
+RUN npx prisma generate
+
+# ---- dev: usado pelo docker-compose.override.yml, com hot-reload ----
+FROM deps AS dev
+WORKDIR /app
+COPY . .
+CMD ["npm", "run", "dev"]
+
+# ---- build: compila TypeScript -> dist ----
+FROM node:20-alpine AS build
+RUN apk add --no-cache openssl
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/prisma ./prisma
+COPY . .
+RUN npm run build
+
+# ---- prod-deps: reinstala só dependências de produção ----
+FROM node:20-alpine AS prod-deps
+RUN apk add --no-cache openssl python3 make g++
+WORKDIR /app
+COPY package*.json ./
+COPY prisma ./prisma
+RUN npm ci --omit=dev
+RUN npx prisma generate
+
+# ---- production: imagem final enxuta ----
+FROM node:20-alpine AS production
+RUN apk add --no-cache openssl
+WORKDIR /app
+ENV NODE_ENV=production
+COPY --from=prod-deps /app/node_modules ./node_modules
+COPY --from=build /app/dist ./dist
+COPY --from=build /app/prisma ./prisma
+COPY package*.json ./
+
+EXPOSE 3000
+CMD ["node", "dist/main"]