buildx/docs/reference/buildx_use.md

buildx use

Usage:  docker buildx use [OPTIONS] NAME

Set the current builder instance

Options:
      --builder string   Override the configured builder instance
      --default          Set builder as default for current context
      --global           Builder persists context changes

Description

Switches the current builder instance. Build commands invoked after this command will run on a specified builder. Alternatively, a context name can be used to switch to the default builder of that context.