Change "arch" into "platform" because it's more accurate.

Signed-off-by: Tom Chauveau <tom.chauveau@epitech.eu>

environment/environment.go

@@ -139,7 +139,7 @@ func (e *Environment) Up(ctx context.Context, s solver.Solver) error {
 	flow := cueflow.New(
 		&cueflow.Config{},
 		e.src.Cue(),
-		newTaskFunc(newPipelineRunner(e.computed, s, e.state.Architecture)),
+		newTaskFunc(newPipelineRunner(e.computed, s, e.state.Platform)),
 	)
 	if err := flow.Run(ctx); err != nil {
 		return err
@@ -200,6 +200,7 @@ func newPipelineRunner(computed *compiler.Value, s solver.Solver, platform strin
 		}
 		v := compiler.Wrap(t.Value())
 
+		fmt.Println(platform)
 		var pipelinePlatform specs.Platform
 		if platform == "" {
 			pipelinePlatform = specs.Platform{OS: "linux", Architecture: "amd64"}

environment/pipeline.go

@@ -46,7 +46,7 @@ type Pipeline struct {
 	name     string
 	s        solver.Solver
 	state    llb.State
-	platform specs.Platform // Architecture constraint
+	platform specs.Platform // Platform constraint
 	result   bkgw.Reference
 	image    dockerfile2llb.Image
 	computed *compiler.Value