#! /bin/bash

# Start a data container and a mongodb instance

echo

# test if the data-db container has been created 
if docker inspect -f {{.Name}} data-db
  then
    echo "* data-db exists"
  else
    echo "* creating data-db"
    # The data container has a volume at /data/db, is named 'data' and is based on mongo
    docker create -v /data/db --name data-db mongo echo "Data container - database"
fi

echo

# test if the mongo db server has been created 
if docker inspect -f {{.Name}} mongodb
  then 
    # make sure the server is running
    if docker inspect -f {{.State.Running}} mongodb
      then
        echo "* mongodb exists and is running"
      else
        echo "* starting mongodb"
        docker start mongodb
    fi
  else  
    echo "* creating new mongodb server"
    # Start a mongo db server as a daemon
    # The server will use the data-db container as a volume
    docker run -p 27017 --name=mongodb --volumes-from=data-db -d mongo 
fi