Keep getting Could not read CA certificate when trying to start docker

Question

I am attempting to migrate from boot2docker to docker-machine.

I followed the directions here to install docker but I keep getting the following message:

Answer 1

Docker from the launchpad on my Mac quit working as well as commands from terminal. I'm just going to say what I did to fix it for me regardless of whether it makes sense in case it helps someone else out.

• I ran unset ${!DOCKER*}

• I then ran:

  export DOCKER_HOST=tcp://192.168.99.100:2376
  export DOCKER_MACHINE_NAME=default
  export DOCKER_TLS_VERIFY=1
  export DOCKER_CERT_PATH=~/.docker/machine/certs/
  

• I then ran: docker (which only partially worked)

• then I ran: unset ${!DOCKER*} again
• Then I launched docker from the Launchpad, gave it a minute and now it's running again and everything is back to normal.