Update private-registries.md

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Jan Kristof Nidzwetzki 5 years ago committed by GitHub
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@ -3,21 +3,21 @@ Watchtower supports private Docker image registries. In many cases, accessing a
The credentials can be provided to watchtower in a configuration file called `config.json`. There are two ways to generate this configuration file:
* The configuration file can be created manually.
* Call `docker login $REGISTRY_NAME` and share the resulting configuration file.
* Call `docker login <REGISTRY_NAME>` and share the resulting configuration file.
### Create the configuration file manually
Create a new configuration file with the following syntax and a base64 encoded username and password `auth` string:
```json
{
"auths": {
"$REGISTRY_NAME": {
"<REGISTRY_NAME>": {
"auth": "XXXXXXX"
}
}
}
```
`$REGISTRY_NAME` needs to be replaced by the name of your private registry (e.g., `my-private-registry.example.org`)
`<REGISTRY_NAME>` needs to be replaced by the name of your private registry (e.g., `my-private-registry.example.org`)
The required `auth` string can be generated as follows:
```bash

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