build: minor changes to make boilerplate buildable

GOOS=linux make build
IMG=dkoshkin/capi-runtime-extensions:latest  make docker-build
make deploy

Author: dkoshkin

Dockerfile

@@ -1,71 +1,12 @@
 # syntax=docker/dockerfile:1.4
 
-# Copyright 2022 The Kubernetes Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Build the extension binary
-# Run this with docker build --build-arg builder_image=<golang:x.y.z>
-ARG builder_image
-
-# Ignore Hadolint rule "Always tag the version of an image explicitly."
-# It's an invalid finding since the image is explicitly set in the Makefile.
-# https://github.com/hadolint/hadolint/wiki/DL3006
-# hadolint ignore=DL3006
-FROM ${builder_image} as builder
-WORKDIR /workspace
-
-# Run this with docker build --build-arg goproxy=$(go env GOPROXY) to override the goproxy
-ARG goproxy=https://proxy.golang.org
-# Run this with docker build --build-arg package=./controlplane/kubeadm or --build-arg package=./bootstrap/kubeadm
-ENV GOPROXY=$goproxy
-
-# Copy the Go Modules manifests
-COPY go.mod go.mod
-COPY go.sum go.sum
-
-# Cache deps before building and copying source so that we don't need to re-download as much
-# and so that source changes don't invalidate our downloaded layer
-RUN --mount=type=cache,target=/go/pkg/mod \
-    go mod download
-
-# Copy the sources
-COPY ./ ./
-
-# Cache the go build into the the Go’s compiler cache folder so we take benefits of compiler caching across docker build calls
-RUN --mount=type=cache,target=/root/.cache/go-build \
-    --mount=type=cache,target=/go/pkg/mod \
-    go build .
-
-# Build
-ARG package=.
-ARG ARCH
-ARG ldflags
-
-# Essentially, change directories into test extension
-WORKDIR /workspace/test/extension
-
-# Do not force rebuild of up-to-date packages (do not use -a) and use the compiler cache folder
-RUN --mount=type=cache,target=/root/.cache/go-build \
-    --mount=type=cache,target=/go/pkg/mod \
-    CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} \
-    go build -trimpath -ldflags "${ldflags} -extldflags '-static'" \
-    -o /workspace/extension ${package}
+# Copyright 2023 D2iQ, Inc. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
 
 # Production image
 FROM gcr.io/distroless/static:nonroot
 WORKDIR /
-COPY --from=builder /workspace/extension .
+COPY /bin/manager .
 # Use uid of nonroot user (65532) because kubernetes expects numeric user when applying pod security policies
 USER 65532
-ENTRYPOINT ["/extension"]
+ENTRYPOINT ["/manager"]

README.md

@@ -0,0 +1,3 @@
+# CAPI Runtime Extensions Server
+
+See [upstream documentation](https://cluster-api.sigs.k8s.io/tasks/experimental-features/runtime-sdk/index.html).

config/default/extension.yaml

@@ -15,7 +15,7 @@ spec:
     spec:
       containers:
       - command:
-        - /extension
+        - /manager
         image: controller:latest
         name: extension
       terminationGracePeriodSeconds: 10

config/default/extension_image_patch.yaml

@@ -6,5 +6,6 @@ spec:
   template:
     spec:
       containers:
-      - image: gcr.io/k8s-staging-cluster-api/test-extension:main
+      # FIXME replace with d2iq image
+      - image: dkoshkin/capi-runtime-extensions:latest
         name: extension

config/default/kustomization.yaml

@@ -22,7 +22,7 @@ vars:
     objref:
       kind: Service
       version: v1
-      name: webhook-service
+      name: test-extension-webhook-service
 
 configurations:
   - kustomizeconfig.yaml

config/default/service.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: webhook-service
+  name: test-extension-webhook-service
 spec:
   ports:
     - port: 443

go.mod

@@ -0,0 +1,68 @@
+module github.com/d2iq-labs/capi-runtime-extensions
+
+go 1.19
+
+require (
+	github.com/spf13/pflag v1.0.5
+	k8s.io/component-base v0.25.0
+	k8s.io/klog/v2 v2.90.0
+	sigs.k8s.io/cluster-api v1.3.3
+	sigs.k8s.io/controller-runtime v0.13.1
+)
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/blang/semver v3.5.1+incompatible // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/emicklei/go-restful/v3 v3.9.0 // indirect
+	github.com/evanphx/json-patch/v5 v5.6.0 // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
+	github.com/go-openapi/jsonpointer v0.19.5 // indirect
+	github.com/go-openapi/jsonreference v0.20.0 // indirect
+	github.com/go-openapi/swag v0.22.3 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/google/gnostic v0.6.9 // indirect
+	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/imdario/mergo v0.3.13 // indirect
+	github.com/inconshreveable/mousetrap v1.0.1 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_golang v1.14.0 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
+	github.com/spf13/cobra v1.6.1 // indirect
+	golang.org/x/net v0.4.0 // indirect
+	golang.org/x/oauth2 v0.0.0-20220909003341-f21342109be1 // indirect
+	golang.org/x/sys v0.3.0 // indirect
+	golang.org/x/term v0.3.0 // indirect
+	golang.org/x/text v0.5.0 // indirect
+	golang.org/x/time v0.3.0 // indirect
+	gomodules.xyz/jsonpatch/v2 v2.2.0 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/api v0.25.0 // indirect
+	k8s.io/apiextensions-apiserver v0.25.0 // indirect
+	k8s.io/apimachinery v0.25.0 // indirect
+	k8s.io/client-go v0.25.0 // indirect
+	k8s.io/kube-openapi v0.0.0-20221012153701-172d655c2280 // indirect
+	k8s.io/utils v0.0.0-20221128185143-99ec85e7a448 // indirect
+	sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
+)