add kubectl image

Author: eumel8

.github/workflows/kubectl.yaml

@@ -24,8 +24,7 @@ jobs:
             mtr.devops.telekom.de/mcsps/kubectl
             ghcr.io/mcsps/kubectl
           tags: |
-            type=ref,event=branch
-            #type=semver,pattern={{version}},value=v1.31.0 # change also in the Dockerfile
+            type=semver,pattern={{version}},value=v1.31.0 # change also in the Dockerfile
       - name: Install Cosign
         uses: sigstore/cosign-installer@main
         with:

kubectl/Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine:latest
-LABEL org.opencontainers.image.source = "https://github.com/mcsps/docker-images"
+LABEL org.opencontainers.image.source="https://github.com/mcsps/docker-images"
 
 RUN apk --no-cache add ca-certificates bash curl git jq openssl
 RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.31.0/bin/linux/amd64/kubectl && chmod +x kubectl && mv kubectl /usr/local/bin/kubectl