1) Update the following:

//PV2 URLs for assemblies, 2.7 TBC (they change with versions)
:URL_RELEASE_NOTES: {ASSEMBLY_BASE_URL}/5cbab82b-042a-4a68-ac5e-54901a9cc222
:URL_GETTING_STARTED_QUARKUS: {ASSEMBLY_BASE_URL}/f93c45bd-4feb-4f74-a70a-022e9fb41957
:URL_MAVEN_QUARKUS: {ASSEMBLY_BASE_URL}/06259b29-78a7-4463-9368-8c7de618e784
:URL_OPENSHIFT_QUARKUS: {ASSEMBLY_BASE_URL}/d0c7a9c6-02a0-4c10-9ca2-7288f0f57872
:URL_CONFIGURATION_QUARKUS: {ASSEMBLY_BASE_URL}/34313937-d855-48cd-b793-8db36fe92a8d
:URL_CONFIGURATION_QUARKUS_YAML: {ASSEMBLY_BASE_URL}/0e3affac-d515-4e61-8c07-445c5f1cc057
:URL_TESTING_QUARKUS: {ASSEMBLY_BASE_URL}/614ca029-ec49-4cf1-af0a-daf613dae7d9
:URL_NATIVE_EXECUTABLE_QUARKUS: {ASSEMBLY_BASE_URL}/c9fdb950-554d-427d-aa49-cc3da15ae860
:URL_COLLECTING_METRICS_IN_QUARKUS: {ASSEMBLY_BASE_URL}/1f84e3e5-7b64-419e-992b-5a3f57bc79fb
:URL_CONFIGURING_LOGGING_WITH_QUARKUS: {ASSEMBLY_BASE_URL}/abf0c517-ac1a-495b-8e63-fcb35b1395b5
:URL_TRANSACTION_MANAGER: {ASSEMBLY_BASE_URL}/5f5c958d-8864-41c7-93a6-f1c4b63e4805
:URL_USING_QUARKUS_SPRING_WEB: {ASSEMBLY_BASE_URL}/168f791b-7b17-482a-a062-892bc3ccd07e
:URL_INTRO_DATA_SOURCES_QUARKUS: {ASSEMBLY_BASE_URL}/f31dd981-216b-4a43-9fd2-f36374c252da
:URL_JDBC_DATA_SOURCE_CONFIGURATION: {ASSEMBLY_BASE_URL}/f32d4f0b-b24c-4323-b984-319770794fcb
:URL_DATA_SOURCE-MANAGEMENT: {ASSEMBLY_BASE_URL}/ace04c71-40ad-47c1-a27b-2f93eefab568
:URL_DATABASE_URL_EXAMPLES_FULL_SUPPORT: {ASSEMBLY_BASE_URL}/a4b858ad-65f9-4ff5-9241-cbff4b7a637b
:URL_DATABASE_URL_EXAMPLES_DEV_SUPPORT: {ASSEMBLY_BASE_URL}/71b6f4e8-bb6d-4e4d-aa7c-0644c2cae459
:URL_SERVICE_BINDING: {ASSEMBLY_BASE_URL}/4de2ab50-cb94-426d-8f6b-75ecbec52e58

2) Add the missing attribute for UBI images as suggested by Pablo:

:RHELVersionLong: 8.7
:RHELVersionUBI: 8.6
.....
:ContainerCatalog: {CompanyName} Ecosystem Catalog :name-image-ubi8: registry.access.redhat.com/ubi8/ubi:{RHELVersionUBI} :name-image-ubi8-short: ubi8/ubi:{RHELVersionUBI} :name-image-ubi8-minimal: registry.access.redhat.com/ubi8/ubi-minimal:{RHELVersionUBI} :name-image-ubi8-minimal-short: ubi8/ubi-minimal:{RHELVersionUBI}