feat: krew plugin workflow (#214)

* Added krew plugin workflow

* Removed $ from kubectl command

* Removed usage examples

.github/workflows/release.yml

@@ -33,18 +33,20 @@ jobs:
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-          
+
       - name: Extract metadata for the Docker image
         id: meta
         uses: docker/metadata-action@v5
         with:
           images: ${{ secrets.DOCKERHUB_USERNAME }}/kor
-  
+
       - name: Build and push the Docker image
         uses: docker/build-push-action@v5
         with:
           context: .
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-
+
+      - name: Update new version in krew-index
+        uses: rajatjindal/[email protected]

.krew.yaml

@@ -0,0 +1,43 @@
+apiVersion: krew.googlecontainertools.github.com/v1alpha2
+kind: Plugin
+metadata:
+  name: kor
+spec:
+  version: {{ .TagName }}
+  homepage: https://github.com/yonahd/kor
+  shortDescription: Kor is a tool to discover unused K8s resources.
+  description: |
+    This plugin shows unused Kubernetes resources (namespaced or cluster-scoped).
+    It provides additional capabilities such as exporting Prometheus metrics,
+    deleting unused resources, and more!
+  platforms:
+  - selector:
+      matchLabels:
+        os: linux
+        arch: amd64
+    {{ addURIAndSha "https://github.com/yonahd/kor/releases/download/{{ .TagName }}/kor_Linux_x86_64.tar.gz" .TagName }}
+    bin: kor
+  - selector:
+      matchLabels:
+        os: linux
+        arch: arm64
+    {{ addURIAndSha "https://github.com/yonahd/kor/releases/download/{{ .TagName }}/kor_Linux_arm64.tar.gz" .TagName }}
+    bin: kor
+  - selector:
+      matchLabels:
+        os: darwin
+        arch: amd64
+    {{ addURIAndSha "https://github.com/yonahd/kor/releases/download/{{ .TagName }}/kor_Darwin_x86_64.tar.gz" .TagName }}
+    bin: kor
+  - selector:
+      matchLabels:
+        os: darwin
+        arch: arm64
+    {{ addURIAndSha "https://github.com/yonahd/kor/releases/download/{{ .TagName }}/kor_Darwin_arm64.tar.gz" .TagName }}
+    bin: kor
+  - selector:
+      matchLabels:
+        os: windows
+        arch: amd64
+    {{ addURIAndSha "https://github.com/yonahd/kor/releases/download/{{ .TagName }}/kor_Windows_x86_64.zip" .TagName }}
+    bin: kor.exe

README.md

@@ -55,6 +55,11 @@ docker run --rm -i yonahdissen/kor
 docker run --rm -i -v "/path/to/.kube/config:/root/.kube/config" yonahdissen/kor all
 ```
 
+### Kubectl plugin (<img src="https://raw.githubusercontent.com/kubernetes-sigs/krew/master/assets/logo/horizontal/color/krew-horizontal-color.png" alt="krew" width="48"/>)
+```sh
+kubectl krew install kor
+```
+
 ### Helm
 Run as a cronjob in your Cluster (with an option for sending slack updates)
 ```sh

cmd/kor/root.go

@@ -3,6 +3,8 @@ package kor
 import (
 	"fmt"
 	"os"
+	"path/filepath"
+	"strings"
 
 	"github.com/spf13/cobra"
 
@@ -11,8 +13,17 @@ import (
 	"github.com/yonahd/kor/pkg/utils"
 )
 
+func execName() string {
+	n := "kor"
+	if strings.HasPrefix(filepath.Base(os.Args[0]), "kubectl-") {
+		return "kubectl-" + n
+	}
+
+	return n
+}
+
 var rootCmd = &cobra.Command{
-	Use:   "kor",
+	Use:   execName(),
 	Short: "kor - a CLI to to discover unused Kubernetes resources",
 	Long: `kor is a CLI to to discover unused Kubernetes resources
 	kor can currently discover unused configmaps and secrets`,