### Windows
On Windows, you can use the following methods to create a `registry.json` file.
#### Create registry.json when installing Docker Desktop on Windows
To automatically create a `registry.json` file when installing Docker Desktop, download `Docker Desktop Installer.exe` and run one of the following commands from the directory containing `Docker Desktop Installer.exe`. Replace `myorg` with your organization's name.
If you're using PowerShell:
```powershell
PS> Start-Process '.\Docker Desktop Installer.exe' -Wait install --allowed-org=myorg
```
If you're using the Windows Command Prompt:
```console
C:\Users\Admin> "Docker Desktop Installer.exe" install --allowed-org=myorg
```
#### Create registry.json manually on Windows
To manually create a `registry.json` file, run the following PowerShell command as an Admin and replace `myorg` with your organization's name:
```powershell
PS> Set-Content /ProgramData/DockerDesktop/registry.json '{"allowedOrgs":["myorg"]}'
```
This creates the `registry.json` file at `C:\ProgramData\DockerDesktop\registry.json` and includes the organization information the user belongs to. Make sure this file can't be edited by the user, only by the administrator.
### Mac
On Mac, you can use the following methods to create a `registry.json` file.
#### Create registry.json when installing Docker Desktop on Mac
To automatically create a registry.json file when installing Docker Desktop, download `Docker.dmg` and run the following commands in a terminal from the directory containing `Docker.dmg`. Replace `myorg` with your organization's name.
```console
$ sudo hdiutil attach Docker.dmg
$ sudo /Volumes/Docker/Docker.app/Contents/MacOS/install --allowed-org=myorg
$ sudo hdiutil detach /Volumes/Docker
```
#### Create registry.json manually on Mac
To manually create a `registry.json` file, run the following commands in a terminal
and replace `myorg` with your organization's name.
```console
$ sudo mkdir -p "/Library/Application Support/com.docker.docker"
$ echo '{"allowedOrgs":["myorg"]}' | sudo tee "/Library/Application Support/com.docker.docker/registry.json"
```
This creates (or updates, if the file already exists) the `registry.json` file
at `/Library/Application Support/com.docker.docker/registry.json` and includes
the organization information the user belongs to. Make sure the file has the
expected content and can't be edited by the user, only by the administrator.
Verify that the content of the file contains the correct information;
```console
$ sudo cat "/Library/Application Support/com.docker.docker/registry.json"
{"allowedOrgs":["myorg"]}
```
Verify that the file has the expected permissions (`-rw-r--r--`) and ownership
(`root` and `admin`):
```console
$ sudo ls -l "/Library/Application Support/com.docker.docker/registry.json"
-rw-r--r-- 1 root admin 26 Jul 27 22:01 /Library/Application Support/com.docker.docker/registry.json
```