add usage example #298

Job	Run time
Azure Container Registry - admin credentials	1m 52s
Azure Container Registry - Managed Identity	3m 10s
GitHub Package Registry	2m 53s
Azure Container Registry - AD OIDC credentials	2m 19s
AWS ECR (Private)	1m 0s
AWS ECR (Private) with Docker Credential Helper	1m 1s
GitHub Package Registry - Raw CLI calls	5m 4s
AWS ECR (Public)	38s
Build Dockerfile as a comparison	26s
Push to Docker hub	12m 31s
Google Cloud Artifact Registry	1m 12s
GitLab Container Registry	47s
Push to Harbor	0s
Publish an image to a local archive and read it in	32s
Local Docker Daemon	47s
Local Docker Daemon, Chiseled Ubuntu container	38s
Local Podman installation	1m 2s
Push to Quay.io	17m 0s
	52m 52s

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