package testing import ( "alpha.dagger.io/dagger/op" "alpha.dagger.io/dagger" ) source: dagger.#Artifact foo: "bar" bar: { string #up: [ op.#FetchContainer & {ref: "busybox"}, op.#Exec & { args: ["cp", "/source/testfile", "/out"] mount: "/source": from: source }, op.#Export & { format: "string" source: "/out" }, ] }