'docker not found' after 'brew install --cask docker'

[nva14]

I installed Docker Desktop for Mac (apple silicon) using Homebrew, but docker command not available after installation. Computer restarted.

.zshrc content:

if type brew &>/dev/null
then
FPATH="$(brew --prefix)/share/zsh/site-functions:${FPATH}"

autoload -Uz compinit
compinit
fi

Which step did i miss?

Thanks for any help :)

[SMillerDev]

Well, casks do not install to HOMEBREW_PREFIX. They install wherever they want. In the case of Docker it installs to /usr/local/bin

[nva14]

That's odd, i can't find anything in folder /usr/local/bin. I added export PATH=/usr/local/bin:$PATH to .zshrc and that does nothing.

This computer previously had Docker Desktop for Mac installed by downloading from official Docker website, later i uninstalled it.

[osalbahr]

Yeah, it is strange. But the tools are only installed in /usr/local/bin after you open the app and go through the setup with default settings.

[galeselee]

This issue will be helpful

[spacether]

Docker CLI tools are installed under $HOME/.docker/bin -- so docker is not available on the CLI by default. You can update your PATH or go to Docker Desktop settings -> Advanced -> select "System (Requires password)"
This will automatically hoist the docker cli into your terminal environment.

By default docker only installs the cli binaries into $HOME/.docker/bin and the user must manually add that to their path.

[chitalian]

THIS!! Thank you for writing this

[chitalian]

echo "export PATH=\"\$HOME/.docker/bin:\$PATH\"" >> ~/.zshrc

Btw - A quick one-liner for anyone that wants to get up and running quickly without adding docker to your system

[osalbahr]

If I understand correctly, it only installs in $HOME/.docker/bin if you open the app and select User in the setup page.

[code-instable]

This is a solution which worked for me :

• after installing docker via brew install --cask docker, you need to finish the installation by running the Docker application ( Docker.app) which has been added to your app folder.

• Then you will be able to use it in the command line / terminal

the hint was :

$ > brew reinstall --cask docker
==> Installing Cask docker
==> Moving App 'Docker.app' to '/Applications/Docker.app'

Hope it helps some

[lkapt]

The issue described is that the docker command suddenly stopped being recognized by the system. The following steps resolved the issue:

Open the Docker Desktop application.
Navigate to the "Advanced" settings.
Locate the option labeled "Choose how to configure the installation of Docker's CLI tools."
Temporarily change the configuration setting to "User."
Afterward, revert the configuration setting back to "System."

These steps helped reconfigure the Docker CLI tools and restored the ability to use the docker command on the system.

[osalbahr]

I opened Homebrew/homebrew-cask#146078 specifically about this exact issue

For now, these workarounds seem to work:

First, run brew uninstall --formula docker --force. This is because the cask already comes with the CLI tools, just not in the right directory yet. So, you'd want to get rid of duplicates or possible conflicts. The command should also fix the error that occurs when trying to install the cask after having already installed the formula.

a) Open the app. Click on Troubleshoot (next to the Settings gear). Click Uninstall. Once you get the pop-up. Then, reopen the app. The setup page should appear. You can either keep it as System or pick User, both should work
b) In Settings -> Advances, Switch to User then back to System in the Sr (as in https://github.com/orgs/Homebrew/discussions/3471#discussioncomment-5748926 as well)

[matsonkepson]

brew link docker