Mount a host directory as a data volume in Docker

[lvarayut]

Should we mount a host directory as a data volume in docker-compose.yml? So, we could develop on our local machine, and keep our codes sync between the local machine and a docker machine? As following:

web:
  build: .
  links:
   - db
  ports:
   - "3000:3000"
  environment: 
   NODE_ENV: development
  volumes:
    - .:/home/mean
db:
  image: mongo
  ports: 
   - "27017:27017"

[codydaig]

@lvarayut I would like to refrain from mounting the volume permanently. Isn't there something in the README that describes how to do this?

[lvarayut]

Do you mean the following command?

$ docker run -p 3000:3000 -p 35729:35729 -v /Users/mdl/workspace/mean-stack/mean/public:/home/mean/public -v /Users/mdl/workspace/mean-stack/mean/app:/home/mean/app --link db:db_1 mean

So, if I wanted to mount the volume, I can't do it with docker-compose up command but instead I have to manually mount it by using the command above. In other word, I had to do the following steps:

$ docker build -t mean .
$ docker run -p 27017:27017 -d --name db mongo
$ docker run -p 3000:3000 -p 35729:35729 -v /Users/mdl/workspace/mean-stack/mean/public:/home/mean/public -v /Users/mdl/workspace/mean-stack/mean/app:/home/mean/app --link db:db_1 mean

Is that what you meant? The conclusion is that we couldn't use docker-compose up in this case.