Add wrapper image over alpine image (#1770)

Author: triviajon

.github/dependabot.yml

@@ -102,3 +102,8 @@ updates:
     directory: /components/datadog/apps/cws/images/cws-centos7
     schedule:
       interval: daily
+
+  - package-ecosystem: docker
+    directory: /components/datadog/apps/etcd/images/alpine
+    schedule:
+      interval: daily

.github/workflows/docker-publish.yml

@@ -80,6 +80,8 @@ jobs:
             image: cuda-basic
           - app: s3-proxy-nginx
             image: s3-proxy-nginx
+          - app: etcd
+            image: alpine
     steps:
       - name: Checkout repository
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

components/datadog/apps/etcd/images/alpine/Dockerfile

@@ -0,0 +1,3 @@
+FROM alpine:3.21
+RUN apk add --no-cache curl netcat-openbsd
+ENTRYPOINT ["/bin/sh"]