accessing a docker container from another container

Question

i created two docker containers based on two different images. one of db and another for webserver. both containers are running on my mac osx.

i can access db conta

Answer 1

Using docker-compose, services are exposed to each other by name by default. Docs.
You could also specify an alias like;

version: '2.1'
services:
  mongo:
    image: mongo:3.2.11
  redis:
    image: redis:3.2.10
  api:
    image: some-image
    depends_on:
      - mongo
      - solr
    links:
      - "mongo:mongo.openconceptlab.org"
      - "solr:solr.openconceptlab.org"
      - "some-service:some-alias"

And then access the service using the specified alias as a host name, e.g mongo.openconceptlab.org for mongo in this case.