Failed to extract oc or openshift-install binaries via command oc adm release extract

    1. Open https://access.redhat.com/documentation/en-us/openshift_container_platform/4.15/html/installing/disconnected-installation-mirroring#installation-mirror-repository_installing-mirroring-installation-images
    2. Find item 4 "To create the installation program that is based on the content that you mirrored, extract it and pin it to the release:"     
    3. The command for "If your mirror host does not have internet access, run the following command:" item doesn't contain ${ARCHITECTURE} and there is an extra slash

The correct command
oc adm release extract -a ${LOCAL_SECRET_JSON} --icsp-file=<file> --command=openshift-install "${LOCAL_REGISTRY}/${LOCAL_REPOSITORY}:${OCP_RELEASE}-${ARCHITECTURE}"
     

1. "error: image "<REPOSITORY>/ocp4/openshift4:4.15.3" not found: manifest unknown: manifest unknown" for the missing ${ARCHITECTURE}
2. "error: you may only specify a single image via --from or argument" because of the extra slash

Successfully extract openshift-install or oc binaries