Inicializamos proyecto:
- Usando npm init, con la node@latest (v24.4.1)
#1 PR : feat/project_structure
- Añadimos dependencias que voy a usar
- Creo una estructura de directorio inicial
- Añado un primer test (database.test.ts) para jest
#2 PR : feat/database_and_feed_model
- Añadimos moongose a las dependencias
- Añado un docker-compose con mongo local (luego lo ampliaré para esta propia app)
- Modificar el docker para tenerlo multistage y reducir el tamaño de las imagenes de contenedores
- añadir documentación de Docker, docker-compose
- añadir documentación de las capas de abstracción de "Feed"

Feed layer abstractions

From higher to lower:

Layer 1: HTTP/Controller (Highest Abstraction)
FeedController.ts : Handles HTTP requests/responses, API endpoints
Layer 2: Business Logic/Service
FeedService.ts : Implements business rules, validation, orchestration
Layer 3: Data Access/Repository
FeedRepository.ts : Abstracts database operations, CRUD methods
Layer 4: Data Model/Schema
Feed.ts : Mongoose schema, database validations, indexes
Layer 5: Type Definitions (Lowest Abstraction)
Feed.ts : TypeScript interfaces, enums, DTOs
config.ts : Configuration settings

Dockerfile simple to multistage

I rebuild the Dockerfile to be multistage, since the image was heavy because all the node_modules dependencies. The size of the image has been reduced from 717Mb to 376.

dailytrends-app-legacy latest 96a2dfe15361 3 minutes ago 717MB dailytrends-app-light latest 7436142e1301 3 seconds ago 376MB

legacy

FROM node:24-slim
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
RUN npm run build
EXPOSE 3000
CMD ["node", "dist/index.js"]

light

FROM node:24-slim AS builder
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
RUN npm run build

FROM node:24-slim AS production
WORKDIR /app
COPY package*.json ./
RUN npm install --production
COPY --from=builder /app/dist ./dist
EXPOSE 3000
CMD ["node", "dist/index.js"]