Update README.md

Author: minghsu0107

README.md

@@ -11,57 +11,6 @@ Environment variables:
 - `IMAGES`: Updated images (comma-separated list)
 - `IMAGE_TAG`: Image tag generated in current build
 - `KUSTOMIZATION`: Kustomization path relative to the project root
-## Github Actions Example
-```yaml
-name: Publish and Deploy Docker image
-
-on:
-  push:
-    branches:
-      - main
-
-jobs:
-  publish_deploy:
-    name: Publish and Deploy Docker image
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out the repo
-        uses: actions/checkout@v2
-      
-      - name: Log in to Container Registry
-        uses: docker/login-action@v1
-        with:
-          registry: harbor.mycompany.com
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-      
-      - name: Extract metadata (tags, labels)
-        id: meta
-        uses: docker/metadata-action@v3
-        with:
-          images: harbor.mycompany.com/myuser/mysvc1
-          
-      - name: Build and push Docker image
-        uses: docker/build-push-action@v2
-        with:
-          context: .
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          
-      - name: Deploy Docker Image
-        uses: minghsu0107/update-kustomization
-        env:
-          SSH_KEY: ${{ secrets.SSH_KEY }}
-          MANIFEST_HOST: git.mycompany.com
-          MANIFEST_USER: myuser
-          MANIFEST_USER_EMAIL: myuser@mycompany.com
-          MANIFEST_REPO: myapp-manifests
-          MANIFEST_BRANCH: main
-          IMAGES: harbor.mycompany.com/myuser/mysvc1
-          IMAGE_TAG: ${{ steps.meta.outputs.tags }}
-          KUSTOMIZATION: overlays/production
-```
 ## Drone Usage Example
 ```yaml
 kind: pipeline