Build krp-curl in a GitHub Action

.github/workflows/docker-krp-curl.yml

@@ -0,0 +1,55 @@
+name: Build krp-curl Docker image
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Image version'
+        required: true
+        default: 'v0.0.3'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: quay.io/brancz/krp-curl
+          tags: |
+            type=raw,value=${{ inputs.version }}
+          labels:
+            org.opencontainers.image.title=krp-curl
+            org.opencontainers.image.description=Curl image for kube-rbac-proxy
+          annotations:
+            org.opencontainers.image.title=krp-curl
+            org.opencontainers.image.description=Curl image for kube-rbac-proxy
+        env:
+          DOCKER_METADATA_ANNOTATIONS_LEVELS: manifest,index
+
+      - name: Login to Quay.io
+        uses: docker/login-action@v3
+        with:
+          registry: quay.io
+          username: ${{ secrets.QUAY_USERNAME }}
+          password: ${{ secrets.QUAY_PASSWORD }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          file: examples/example-client/Dockerfile
+          pull: true
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          annotations: ${{ steps.meta.outputs.annotations }}
+          labels: ${{ steps.meta.outputs.labels }}
+          provenance: mode=max
+          platforms: linux/amd64,linux/arm64,linux/arm,linux/ppc64le,linux/s390x
+          sbom: true

examples/example-client-urlquery/Dockerfile

@@ -1,5 +1,5 @@
-FROM alpine:3.7
+FROM alpine:3.21
 
 RUN apk add --no-cache curl
 
-CMD curl -v -s -k -H "Authorization: Bearer `cat /var/run/secrets/kubernetes.io/serviceaccount/token`" https://kube-rbac-proxy.default.svc:8443/metrics?namespace=default
+CMD curl -v -sS -k -H "Authorization: Bearer `cat /var/run/secrets/kubernetes.io/serviceaccount/token`" https://kube-rbac-proxy.default.svc:8443/metrics?namespace=default

examples/example-client/Dockerfile

@@ -1,5 +1,5 @@
-FROM alpine:3.12
+FROM alpine:3.21
 
 RUN apk add --no-cache curl
 
-CMD curl -v -s -k -H "Authorization: Bearer `cat /var/run/secrets/kubernetes.io/serviceaccount/token`" https://kube-rbac-proxy.default.svc:8443/metrics
+CMD curl -v -sS -k -H "Authorization: Bearer `cat /var/run/secrets/kubernetes.io/serviceaccount/token`" https://kube-rbac-proxy.default.svc:8443/metrics