docker-machine: Can't access container's web server from host

Question

I just installed Docker with Docker-Toolbox on my Mac using homebrew: install docker with homebrew

After creating and configuring a Container with Rails, Postgres an

Answer 1

For those who tried localhost:4000 as the tutorial said but failed:

Input this:

$ docker-machine env

and you will see something like:

export DOCKER_TLS_VERIFY="1"
export DOCKER_HOST="tcp://192.168.99.100:2376"
export DOCKER_CERT_PATH="/Users/choi/.docker/machine/machines/dummy"
export DOCKER_MACHINE_NAME="dummy"

So you get the IP: 192.168.99.100. Then just visit 192.168.99.100:4000, as ip:your_port.