feat(build): use Docker Build Cloud for image build

[gustavovalverde]

Motivation

We've been using extra large machines in GitHub (like our ubuntu-latest-xl) to be able to build our CI Docker images, as the build time is considerably large, but this has also increased our billing use above $1,000. For this reason we've considered moving this specific task to the new Docker Build Cloud service (https://www.docker.com/products/build-cloud/)

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Specifications

https://docs.docker.com/build/cloud/ci/

Solution

Configure the setup-buildx-action to use a remote buildx defined at https://build.docker.com/accounts/zfnd/builders

Testing

The image should get built, not slower than using our actual implementation

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[arya2]

Looks good and seems to work, thank you!

[gustavovalverde]

@Mergifyio refresh

[mergify]

refresh

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