build: refactor inputs

[crazy-max]

relates to docker/buildx#3520 (review) and internal discussions.

Refactor the inputs for our build workflow to be more consistent with our build-push-action and also avoid confusion like docker/buildx#3520 (review).

The following build-push-action inputs are missing in our reusable workflow but some are not needed:

Name	Type	Description	Note
add-hosts	List/CSV	List of customs host-to-IP mapping (e.g., docker:10.180.0.1)	Not needed
allow	List/CSV	List of extra privileged entitlement (e.g., network.host,security.insecure)	Not needed
attests	List	List of attestation parameters (e.g., type=sbom,generator=image)	Not needed
builder	String	Builder instance (see setup-buildx action)	Not needed
build-contexts	List	List of additional build contexts (e.g., name=path)	Can be added
cache-from	List	List of external cache sources (e.g., type=local,src=path/to/dir)	Not needed
cache-to	List	List of cache export destinations (e.g., type=local,dest=path/to/dir)	Not needed
call	String	Set method for evaluating build (e.g., check)	Not needed
cgroup-parent	String	Optional parent cgroup for the container used in the build	Not needed
load	Bool	Load is a shorthand for --output=type=docker (default false)	Not needed
network	String	Set the networking mode for the RUN instructions during build	Not needed
no-cache	Bool	Do not use cache when building the image (default false)	Not needed
no-cache-filters	List/CSV	Do not cache specified stages	Not needed if we disable cache for now
provenance	Bool/String	Generate provenance attestation for the build (shorthand for --attest=type=provenance)	Not needed, we set it already
secrets	List	List of secrets to expose to the build (e.g., key=string, GIT_AUTH_TOKEN=mytoken)	Can be added
ssh	List	List of SSH agent socket or keys to expose to the build	We could support it but it needs an extra step in our workflow to create the agent.
tags	List/CSV	List of tags	Not needed we are using the metadata-action

@dvdksn I wonder if we could start having examples in this repo for now under a docs dir before having them on docs repo on GA?

[dvdksn]

Yes @crazy-max would be great to keep examples here until we have something on docs.docker.com

[crazy-max]

@tonistiigi Pushed extra commit to remove GHA cache for now related to #56