Add multi-arch image via Bazel (#1452)

* Add multi-arch image via Bazel

* Drop the commented  tags

* Move tests to //integration

cmd/executor/BUILD

@@ -0,0 +1,60 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+load("@io_bazel_rules_docker//container:container.bzl", "container_image")
+
+go_library(
+    name = "executor_lib",
+    srcs = ["main.go"],
+    importpath = "github.com/GoogleContainerTools/kaniko/cmd/executor",
+    visibility = ["//visibility:private"],
+    deps = ["//cmd/executor/cmd"],
+)
+
+go_binary(
+    name = "executor",
+    embed = [":executor_lib"],
+    pure = "on",
+    visibility = ["//visibility:public"],
+)
+
+ARCHITECTURES = [
+    "amd64",
+    "arm64",
+]
+
+[
+    go_binary(
+        name = "executor_" + arch,
+        embed = [":executor_lib"],
+        goarch = arch,
+        goos = "linux",
+        pure = "on",
+        visibility = ["//visibility:public"],
+    )
+    for arch in ARCHITECTURES
+]
+
+[
+    container_image(
+        name = "image_" + arch,
+        architecture = arch,
+        base = "//files:image",
+        directory = "/kaniko",
+        entrypoint = ["/kaniko/executor_" + arch],
+        env = {
+            "HOME": "/root",
+            "USER": "root",
+            "PATH": "/usr/local/bin:/kaniko",
+            "SSL_CERT_DIR": "/kaniko/ssl/certs",
+            "DOCKER_CONFIG": "/kaniko/.docker/",
+        },
+        files = [
+            ":executor_" + arch,
+        ],
+        symlinks = {
+            "/kaniko/executor": "/kaniko/executor_" + arch,
+        },
+        visibility = ["//visibility:public"],
+        workdir = "/workspace",
+    )
+    for arch in ARCHITECTURES
+]

cmd/executor/cmd/root.go

@@ -95,8 +95,10 @@ var RootCmd = &cobra.Command{
 			}
 			logrus.Warn("kaniko is being run outside of a container. This can have dangerous effects on your system")
 		}
-		if err := executor.CheckPushPermissions(opts); err != nil {
-			exit(errors.Wrap(err, "error checking push permissions -- make sure you entered the correct tag name, and that you are authenticated correctly, and try again"))
+		if !opts.NoPush {
+			if err := executor.CheckPushPermissions(opts); err != nil {
+				exit(errors.Wrap(err, "error checking push permissions -- make sure you entered the correct tag name, and that you are authenticated correctly, and try again"))
+			}
 		}
 		if err := resolveRelativePaths(); err != nil {
 			exit(errors.Wrap(err, "error resolving relative paths to absolute paths"))