test docker dind

.woodpecker/e2e.yml

@@ -8,6 +8,10 @@ when:
     - main
     - release/**
 
+services:
+  docker:
+    image: docker:dind
+
 matrix:
   k8s:
     # from https://hub.docker.com/r/kindest/node/tags
@@ -18,6 +22,8 @@ pipeline:
   create-cluster:
     image: alpine:3.17.2
     pull: true
+    environment:
+      DOCKER_HOST: tcp://0.0.0.0:2375
     commands:
       - apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/community kind
       - export KUBECONFIG=$${CI_WORKSPACE}/kube.config
@@ -36,6 +42,8 @@ pipeline:
   delete-cluster:
     image: alpine:3.17.2
     pull: true
+    environment:
+      DOCKER_HOST: tcp://0.0.0.0:2375
     commands:
       - apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/community kind
       - export KUBECONFIG=$${CI_WORKSPACE}/kube.config