Add linux_arm and linux_arm64 binary to distribution (#275)

Makefile

@@ -4,6 +4,7 @@ GITHUB_USERNAME := $(CIRCLE_PROJECT_USERNAME)
 GITHUB_REPONAME := $(CIRCLE_PROJECT_REPONAME)
 
 TARGET := kubelogin
+TARGET_OSARCH := linux_amd64 darwin_amd64 windows_amd64 linux_arm linux_arm64
 VERSION ?= $(CIRCLE_TAG)
 LDFLAGS := -X main.version=$(VERSION)
 
@@ -21,7 +22,7 @@ check:
 dist: dist/output
 dist/output:
 	# make the zip files for GitHub Releases
-	VERSION=$(VERSION) CGO_ENABLED=0 goxzst -d dist/output -i "LICENSE" -o "$(TARGET)" -t "dist/kubelogin.rb dist/oidc-login.yaml dist/Dockerfile" -- -ldflags "$(LDFLAGS)"
+	VERSION=$(VERSION) CGO_ENABLED=0 goxzst -d dist/output -i "LICENSE" -o "$(TARGET)" -osarch "$(TARGET_OSARCH)" -t "dist/kubelogin.rb dist/oidc-login.yaml dist/Dockerfile" -- -ldflags "$(LDFLAGS)"
 	# test the zip file
 	zipinfo dist/output/kubelogin_linux_amd64.zip
 	# make the krew yaml structure

dist/oidc-login.yaml

@@ -62,3 +62,27 @@ spec:
         matchLabels:
           os: windows
           arch: amd64
+    - uri: https://github.com/int128/kubelogin/releases/download/{{ env "VERSION" }}/kubelogin_linux_arm.zip
+      sha256: "{{ sha256 .linux_arm_archive }}"
+      bin: kubelogin
+      files:
+        - from: kubelogin
+          to: .
+        - from: LICENSE
+          to: .
+      selector:
+        matchLabels:
+          os: linux
+          arch: arm
+    - uri: https://github.com/int128/kubelogin/releases/download/{{ env "VERSION" }}/kubelogin_linux_arm64.zip
+      sha256: "{{ sha256 .linux_arm64_archive }}"
+      bin: kubelogin
+      files:
+        - from: kubelogin
+          to: .
+        - from: LICENSE
+          to: .
+      selector:
+        matchLabels:
+          os: linux
+          arch: arm64