1. Proposed title of this feature request
Support custom target namespace and release path in oc-mirror v2 (feature parity with oc adm release mirror)

2. What is the nature and description of the request?
The request is to introduce a new configuration parameter, such as releasePath, within the platform block of the ImageSetConfiguration file (API mirror.openshift.io/v2alpha1).

Currently, the oc-mirror v2 plugin forces a specific, hardcoded path structure on the destination registry. Users need the ability to specify a custom namespace and repository path for the release images in their disconnected registry (e.g., overriding the default to use something like openshift4/ocp-release).

This enhancement would bring feature parity with the legacy oc adm release mirror command, which natively supports this via the --to and --to-release-image flags.

Proposed Configuration Example:

kind: ImageSetConfiguration
apiVersion: mirror.openshift.io/v2alpha1
mirror:
  platform:
    releasePath: "openshift4/ocp-release" # Requested custom path for the disconnected registry
    channels:
      - name: stable-4.20
        minVersion: 4.20.8
        maxVersion: 4.20.14
        shortestPath: true
        type: ocp

3. Why does the customer need this?
The customer is currently unable to migrate from the legacy oc adm release mirror tool to the newly supported oc-mirror v2 plugin because the new tool does not support their existing registry architecture.

The disconnected registry is already structured with specific namespaces (e.g., registry.example.com/openshift4/ocp-release).

Forcing a change to the target registry path structure to accommodate oc-mirror limitations would likely disrupt existing CI/CD pipelines, automated deployments, security scanning policies, and Role-Based Access Control (RBAC) rules established within the existing registry. Feature parity is required to ensure a smooth transition without architectural refactoring.

4. List any affected packages or components.

• oc-mirror plugin (specifically the v2 engine)
• ImageSetConfiguration API definitions (mirror.openshift.io/v2alpha1)
• Image mirroring and catalog building logic handling destination references