When I run docker-compose -f mongo-services.yaml up to compose this file below:

services: 

  mongodb:
    image: mongo
    ports:
      - 27017:27017
    environment:
      MONGO_INITDB_ROOT_USERNAME: admin
      MONGO_INITDB_ROOT_PASSWORD: supersecret

  mongo-express:
    image: mongo-express
    ports: 
      - 8081:8081
    environment:
      ME_CONFIG_MONGODB_ADMINUSERNAME: admin
      ME_CONFIG_MONGODB_ADMINPASSWORD: supersecret
      ME_CONFIG_MONGODB_SERVER: mongo
    depends_on:
      - "mongodb"

I tried to compose this file. I expected the mongo-express to connect the mongodb which it did for a split 30’s then it continually disconnects as it shows.

 Could not connect to database using connectionString: mongodb://admin:****@mongo:27017/"

mongo-express-1  | /app/node_modules/mongodb/lib/sdam/topology.js:285

mongo-express-1  |                 const timeoutError = new error_1.MongoServerSelectionError(`Server selection timed out after ${serverSelectionTimeoutMS} ms`, this.description);

mongodb-1        | {"t":{"$date":"2024-09-10T16:35:53.056+00:00"},"s":"I",  "c":"WTCHKPT",  "id":22430,   "ctx":"Checkpointer","msg":"WiredTiger message","attr":{"message":{"ts_sec":1725986153,"ts_usec":56936,"thread":"1:0x7ff8cf000640","session_name":"WT_SESSION.checkpoint","category":"WT_VERB_CHECKPOINT_PROGRESS","category_id":6,"verbose_level":"DEBUG_1","verbose_level_id":1,"msg":"saving checkpoint snapshot min: 4, snapshot max: 4 snapshot count: 0, oldest timestamp: (0, 0) , meta checkpoint timestamp: (0, 0) base write gen: 7"}}}