Creating Custom Repositories

Learn how to create a custom repository.

This task describes how to create a separate custom repository file to override the default repositories that are created when you install Image Builder.

Create a directory to store the customized repositories.
```
sudo mkdir -p /etc/osbuild-composer/repositories
```
Using a text editor, create a file for the version of Oracle Linux image you want to create.
Or, you can copy a default repository file to use as a template. For example, for an Oracle Linux 8 image, you would copy the Oracle Linux 8 JSON file from the default location.
```
sudo cp /usr/share/osbuild-composer/repositories/ol-8.json /etc/osbuild-composer/repositories/
```
Following the repository JSON specification, include the following information for each repository in the file that you created:
- System architecture of the OS.
- name: name of the repository.
- baseurl: the URL of the yum repository.
- check_gpg: must always be set to false.
- rhsm: must always be set to false.
The following is an example of a JSON file for an Oracle Linux 8 image:
```
{
    "x86_64": [
        {
            "name": "baseos",
            "baseurl": "https://yum$ociregion.$ocidomain/repo/OracleLinux/OL8/baseos/latest/x86_64",
            "check_gpg": false,
            "rhsm": false
        },
    ]
}
```
(Optional) Verify that the URLs in the file are correct by comparing them to the corresponding repository file in /etc/yum.repos.d.
For the current example, you would use an Oracle Linux 8 repository file for verification.
```
cat /etc/yum.repos.d/oracle-linux-ol8.repo
```

Restart osbuild-composer.service.

sudo systemctl restart osbuild-composer.service