readme

### mongo
First get the latest mongo image:
    docker pull mongo:latest

And when launch your MongoDB container:
    docker run -v "$(pwd)":/data --name mongo -d mongo mongod --smallfiles

The running containers can be checked by:
    # display only running containers
    docker ps

    # or if you want all containers displayed
    docker ps -a

There are two options for connecting to your Mongo database.
    docker run -it --link mongo:mongo --rm mongo sh -c 'exec mongo "$MONGO_PORT_27017_TCP_ADDR:$MONGO_PORT_27017_TCP_PORT/test"'
    > show dbs
    > exit

Personally, I like just connecting to a running container and executing needed commands from it. You can do what with:
    docker exec -it 442c2541fe1a bash # by ID
    # or
    docker exec -it mongo bash # by Name

To test that your mongo database is working execute the following commands from mongo container:
    db.col.insert({"a": 4})
    db.col.find().pretty()

### NodeJS
First get the latest node image:
    docker pull node:latest
To launch the NodeJS container run:
    docker run -it --rm node
This will run the node container and will put you in the interactive shell (REPL) from which you can execute code. You can test it by entering:
    console.log('It works!!')

### NodeJS + MongoDB
You have multiple ways of running your NodeJS applications. One which I personally like (especially for MongoDB course) is to create a container which has all the required data mounted and is linked to mongo container.
    docker run -it --name node -v "$(pwd)":/data --link mongo:mongo -w /data -p 8080:8080 node bash


    docker run -it --name automation -v "$(pwd)":/data --link mongo:mongo -w /data -p 8082:8082 node node server.js

Stop running container:
    # to see running containers
    docker ps

    # to check output of container
    docker logs nodeapp

    # to tail the output of container
    docker logs -f nodeapp

    # to stop running container
    docker stop nodeapp

    docker rm -f nodeapp