docker login docker-reg.ie-geek.com -u regcisco
docker tag myimage:latest docker-reg.ie-geek.com/cisco/asa-fw:1.0
docker push docker-reg.ie-geek.com/cisco/asa-fw:1.0
You can only push to your own vendor's repository (for example Palo Alto accounts push to paloalto/...); anything else is refused. Multi-platform builds work too: docker buildx build --platform linux/amd64 --provenance=false --sbom=false -t docker-reg.ie-geek.com/cisco/asa-fw:1.0 --push .
Pushing needs a vendor account.