> ## Documentation Index
> Fetch the complete documentation index at: https://astronomer.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Add certificate authorities (CAs) to Docker Desktop

If Astro Private Cloud (APC) users deploy images to a container registry, including the integrated container registry, that uses a TLS certificate signed by a private certificate authority (CA), you need to configure Docker Desktop to trust the CA's public certificate.

Obtain a copy of the CA's public certificate in pem format and place it in `/etc/docker/certs.d`:

```sh wrap theme={null}
mkdir -p /etc/docker/certs.d
cp privateCA.pem /etc/docker/certs.d/
```