OpenShift Pipelines Task is failing after upgrading the Operator in RHCOP

Issue

• A TaskRun is failing because of permission denied error:

warning: unsuccessful cred copy: ".docker" from "/tekton/creds" to "/": unable to create destination directory: mkdir /.docker: permission denied

• /tekton/home is no more the $HOME directory during Task execution.
• /workspace is no more the $PWD working directory during Task execution.
• How to have $HOME env set automatically to /tekton/home and $PWD to /workspace (like it was in OCP Pipelines < 1.6)?