How to import multiple different collections using mongo import in docker-CodePudding

I'm trying to import multiple json files into different collections in my mongo database but only the last imported collection is kept.

This is my docker-compose.yml:

version: "3.7"
services:
  api:
    build: .
    restart: always
    ports:
      - 8080:8080
    depends_on:
      - mongo-seed
  mongo-seed:
    build: ./mongo
    depends_on:
      - mongo_db
  mongo_db:
    image: "mongo:4.4.3"
    restart: always
    environment:
      - MONGO_INITDB_DATABASE="mongo_db"
    ports:
      - 27017:27017

And the mongo-seed Dockerfile:

FROM mongo

COPY ./data/users.json /users.json
CMD mongoimport --drop --host mongo_db --db aada_backend --collection users --type json --file /users.json --jsonArray

COPY ./data/headphones.json /headphones.json
CMD mongoimport --drop --host mongo_db --db aada_backend --collection headphones --type json --file /headphones.json --jsonArray

COPY ./data/earbuds.json earbuds.json
CMD mongoimport --drop --host mongo_db --db aada_backend --collection earbuds --type json --file /earbuds.json --jsonArray

I couldn't find anything online about how to import multiple collections into one database, how can I do this?

CodePudding user response：

This happens because you cannot have more than one CMD instruction in the Dockerfile. When you do, only the last one will be executed, this is by design. What you can do within you seed container -

copy the jsons to the seed container
copy a shell script containing mongoimport commands to the seed container
make CMD execute this script.

For example:

FROM mongo
WORKDIR /jsondata

COPY ./jsondata/ .
COPY ./seed.sh .

RUN chmod  x seed.sh

CMD ["sh", "-c", "/jsondata/seed.sh"]

then in the docker-compose.yaml you can have it configured this way:

version: "3.8"
services:
  mongo_db:
    image: mongo
    ports:
      - 27017:27017

  mongo-seed:
    build: .
    depends_on:
      - mongo_db