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package main
import (
"context"
"os"
"github.com/moby/buildkit/client/llb"
"github.com/moby/buildkit/client/llb/llbbuild"
"github.com/moby/buildkit/util/system"
)
const url = "https://gist.githubusercontent.com/tonistiigi/03b4049f8cc3de059bd2a1a1d8643714/raw/b5960995d570d8c6d94db527e805edc6d5854268/buildprs.go"
func main() {
build := goBuildBase().
Run(llb.Shlex("apk add --no-cache curl")).
Run(llb.Shlexf("curl -o /buildprs.go \"%s\"", url))
buildkitRepo := "github.com/moby/buildkit"
build = build.Run(llb.Shlex("sh -c \"go run /buildprs.go > /out/buildkit.llb.definition\""))
build.AddMount("/go/src/"+buildkitRepo, llb.Git(buildkitRepo, "master"))
pb := build.AddMount("/out", llb.Scratch())
built := pb.With(llbbuild.Build())
dt, err := llb.Image("docker.io/library/alpine:latest").Run(llb.Shlex("ls -l /out"), llb.AddMount("/out", built, llb.Readonly)).Marshal(context.TODO(), llb.LinuxAmd64)
if err != nil {
panic(err)
}
llb.WriteTo(dt, os.Stdout)
}
func goBuildBase() llb.State {
goAlpine := llb.Image("docker.io/library/golang:1.23-alpine")
return goAlpine.
AddEnv("PATH", "/usr/local/go/bin:"+system.DefaultPathEnvUnix).
AddEnv("GOPATH", "/go").
Run(llb.Shlex("apk add --no-cache g++ linux-headers make")).Root()
}
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