Docker daemon config file on boot2docker / docker-machine / Docker Toolbox

Question

Where can I find docker daemon config file on boot2docker machine?

According to this topic: Dockerfile: Docker build can't download packages: centos->yum, de

Answer 1

It took me quite some time to figure this out. If you are using a mac you have to go to a fresh terminal and run:

boot2docker ssh

This will open a new terminal, from there you have to edit or create a file

sudo vi /var/lib/boot2docker/profile

and add the DNS that you would like to add, for example:

DOCKER_OPTS="-dns 8.8.8.8 -dns 8.8.4.4"

After that you need to restart boot2docker. Here I had some issues at the beginning so I close everything and run in a terminal:

boot2docker down
boot2docker up

you can also use:

boot2docker restart

I had to do it twice. After that I started again using the normal boot2docker icon and everything worked.

I hope this helps.