docs: update doc

Author: PierreJeanjacquot

sconify/README.md

@@ -116,7 +116,7 @@ jobs:
 3. **Configure Variables**
    Ensure that the following variables are added to your repository's settings:
 
-   - `DOCKERHUB_USERNAME`: Your DockerHub username
+   - `DOCKER_USERNAME`: Your Docker Registry username
    - `SCONTAIN_USERNAME`: Your Scontain username
 
    NB: Beware if you choose to use secrets to store registries usernames;
@@ -128,8 +128,7 @@ jobs:
 
 4. **Configure Secrets**  
    Ensure that the following secrets are added to your repository's settings:
-   - `DOCKERHUB_USERNAME`: Your DockerHub username
-   - `DOCKERHUB_PASSWORD`: Your DockerHub password or access token
+   - `DOCKER_PASSWORD`: Your Docker Registry password or access token
    - `SCONTAIN_PASSWORD`: Your Scontain password or access token
    - `SCONE_SIGNING_KEY`: The key to use for signing Scone Prod applications