Compose: [MAC] ERROR: Couldn't connect to Docker daemon.

[pboling]

I am having the same error as #2180 with docker v17.06.0.

∴ brew install docker-compose
...

Installed the Docker for Mac app, and started it. Rebooted the computer.

About Docker for Mac says:

Version 17.06.0-ce-mac19 (18663)
Channel: stable
c98c1c25e0

Diagnose Docker for Mac says:

Docker for Mac: version: 17.06.0-ce-mac19 (4cdec4294a50b2233146b09469b49937dabdebdd)
macOS: version 10.12.6 (build: 16G29)
logs: /tmp/5CCD97AF-A356-465E-B131-17299BC94DDE/20170818-162620.tar.gz
[OK]     db.git
[OK]     vmnetd
[OK]     dns
[OK]     driver.amd64-linux
[OK]     virtualization VT-X
[OK]     app
[OK]     moby
[OK]     system
[OK]     moby-syslog
[OK]     db
[OK]     env
[OK]     virtualization kern.hv_support
[OK]     slirp
[OK]     osxfs
[OK]     moby-console
[OK]     logs
[OK]     docker-cli
[OK]     menubar
[OK]     disk

Some details:

∴ docker --version
Docker version 17.06.0-ce, build 02c1d87
∴ docker-compose --version
docker-compose version 1.14.0, build c7bdf9e
∴ docker-machine --version
docker-machine version 0.12.0, build 45c69ad
∴ brew services start docker-machine
==> Successfully started `docker-machine` (label: homebrew.mxcl.docker-machine)

And the errors:

∴ docker ps
Cannot connect to the Docker daemon at tcp://192.168.59.103:2375. Is the docker daemon running?

∴ docker-compose up
ERROR: Couldn't connect to Docker daemon. You might need to start Docker for Mac.

[pboling]

Update, after reading some documentation I realized I didn't need the brew docker lineup, so I uninstalled it.

brew uninstall docker-compose docker

Rebooted the computer, opened Docker for Mac, which requested (again) permission to install links and access networking for which I had to provide my password, I did so, and still got the same error.

Downgrading to Docker for Mac: Version 17.03.1-ce-mac12 (17661) also did not help, same error.

[pboling]

The answer was to check for DOCKER ENV variables and unset them. I had old variables set for boot2docker.

∴ env | grep DOCKER
DOCKER_HOST=tcp://192.168.59.103:2375

Found the file that was setting the variable and stopped setting it!