updates to k8s 1.22.8 and cert-manager 1.8.0

Dockerfile_test

@@ -1,14 +1,20 @@
-FROM golang:1.15.2
+FROM golang:1.17.7
 
 RUN apt-get update && apt-get install -y git bzr ca-certificates curl gcc
 
 WORKDIR /workspace
 ENV GO111MODULE=on
 ENV TEST_BINPATH=/binpath
 
+# new envs for cert-manager
+ENV TEST_ASSET_ETCD=/binpath/etcd
+ENV TEST_ASSET_KUBE_APISERVER=/binpath/kube-apiserver
+ENV TEST_ASSET_KUBECTL=/binpath/kubectl
+
+
 RUN mkdir ${TEST_BINPATH}
 
-ENV KUBERNETES 1.15.3
+ENV KUBERNETES 1.22.8
 
 RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/v${KUBERNETES}/bin/linux/amd64/kubectl && \
     chmod +x ./kubectl; \

go.mod

@@ -3,20 +3,12 @@ module github.com/syseleven/designate-certmanager-webhook
 go 1.15
 
 require (
+	github.com/cert-manager/cert-manager v1.8.0
 	github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
-	github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7 // indirect
-	github.com/google/go-cmp v0.3.1 // indirect
 	github.com/gophercloud/gophercloud v0.14.0
-	github.com/imdario/mergo v0.3.7 // indirect
-	github.com/jetstack/cert-manager v0.16.1
 	github.com/kubernetes-incubator/external-dns v0.5.12
-	github.com/sirupsen/logrus v1.7.0
-	golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6 // indirect
-	golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
-	google.golang.org/appengine v1.6.5 // indirect
-	google.golang.org/genproto v0.0.0-20191230161307-f3c370f40bfb // indirect
-	k8s.io/client-go v0.18.8
-	k8s.io/utils v0.0.0-20200729134348-d5654de09c73 // indirect
+	github.com/sirupsen/logrus v1.8.1
+	k8s.io/client-go v0.23.4
 )
 
 replace git.apache.org/thrift.git => github.com/apache/thrift v0.13.0