comapre host and target platform

Author: Jaytee-fn

common/common.go

@@ -32,6 +32,7 @@ import (
 	"os/exec"
 	"os/signal"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"time"
 	"unicode"
@@ -67,6 +68,12 @@ var ShapeMap = map[string][]string{
 	modelsv2.AppShapeGENERICX86ARM: {"linux/amd64", "linux/arm64"},
 }
 
+var TargetPlatformMap = map[string][]string{
+	modelsv2.AppShapeGENERICX86:    {"amd64"},
+	modelsv2.AppShapeGENERICARM:    {"arm64"},
+	modelsv2.AppShapeGENERICX86ARM: {"multiarch"},
+}
+
 func IsVerbose() bool {
 	return GlobalVerbose || CommandVerbose
 }
@@ -512,22 +519,31 @@ func RunBuild(verbose bool, dir, imageName, dockerfile string, buildArgs []strin
 	go func(done chan<- error) {
 		var dockerBuildCmdArgs []string
 		// Depending whether architecture list is passed or not trigger docker buildx or docker build accordingly
-		var mappedArchitectures []string
+
 		if arch, ok := ShapeMap[shape]; ok {
+			var mappedArchitectures []string
 			mappedArchitectures = append(mappedArchitectures, arch...)
-			if containerEngineType == ContainerEngineType {
-				err := initializeContainerBuilder(containerEngineType, mappedArchitectures)
-				if err != nil {
-					done <- err
-					return
+			var hostedPlatform = runtime.GOARCH
+			if platform, ok := TargetPlatformMap[shape]; ok {
+				targetPlatform := strings.Join(platform," ")
+				if targetPlatform != hostedPlatform {
+					fmt.Println("TargetedPlatform and hostPlatform are not same")
+					if containerEngineType == ContainerEngineType {
+						err := initializeContainerBuilder(containerEngineType, mappedArchitectures)
+						if err != nil {
+							done <- err
+							return
+						}
+					}
+					dockerBuildCmdArgs = buildXDockerCommand(imageName, dockerfile, buildArgs, noCache, mappedArchitectures)
+					// perform cleanup
+					defer cleanupContainerBuilder(containerEngineType)
+				} else {
+					fmt.Println("TargetedPlatform and hostPlatform are same")
+					dockerBuildCmdArgs = buildDockerCommand(imageName, dockerfile, buildArgs, noCache)
 				}
 			}
 
-			dockerBuildCmdArgs = buildXDockerCommand(imageName, dockerfile, buildArgs, noCache, mappedArchitectures)
-			// perform cleanup
-			defer cleanupContainerBuilder(containerEngineType)
-		} else {
-			dockerBuildCmdArgs = buildDockerCommand(imageName, dockerfile, buildArgs, noCache)
 		}
 
 		cmd := exec.Command(containerEngineType, dockerBuildCmdArgs...)