Monorepo issue with shared folder and Docker

I set up a monorepo project with 3 packages

./project1

./project2

./project3

./shared

Each project has it’s own dockerfile and docker compose file

I used npm link to use the shared folder and add this in each package.json :

depedencies:{ "@my-shared/types": "file:../shared" }

and then I can import like this :

import { stuff } from '@my-shared/types';

For example if I run the command "npm run dev" in my project1 (which is a node api) Everything is working fine ! Unless… i’m using docker. If I run the command "docker compose up" in the ./project1 folder then I get error because it can’t find my shared folder.

This is my dockerfile :

FROM node:lts-slim

ENV TZ=Europe/Paris

ADD . /app/
WORKDIR /app

RUN npm install

EXPOSE 3001

CMD npm run dev

And this is my docker-compose :

services:
  mongo:
    image: mongo
    container_name: mongodb
    restart: always
    volumes: 
      - dbdata:/data/db
    networks:
      - api-net
    command: mongod --quiet --logpath /dev/null 
    environment:
      - TZ=Europe/Paris
  
  my-api:
    build: .
    image: my-api 
    restart: always 
    ports:
      - 3001:3001
    volumes: 
      - .:/app  
    depends_on:
      - mongo
    networks:
      - api-net
    environment:
      - TZ=Europe/Paris

networks:
  api-net:
    driver: bridge

volumes:
  dbdata:

I guess I just need to add the folder but I can’t figure it out how.

Thank you for your help