feat: add hack dockefiles to regenerate code and crd manifest

.dockerignore

@@ -0,0 +1,10 @@
+config/
+hack/
+manifests/
+.vscode/
+.git/
+.dockerignore
+.gitignore
+Dockerfile
+README.md
+kluster

.gitignore

@@ -1,3 +1,3 @@
 kluster
 config/
-.vscode
+.vscode/

README.md

@@ -1,5 +1,4 @@
 
-
 # Kluster
 
 A example Kubernetes operator to create Kubernetes cluster on DigitalOcean.
@@ -10,7 +9,7 @@ This operator was written as part of one of my [YouTube playlist](https://www.yo
 
 Here is an example of the Kluster resource
 
-```
+```yaml
 apiVersion: viveksingh.dev/v1alpha1
 kind: Kluster
 metadata:
@@ -32,13 +31,13 @@ Execute below command, from root of the repo
 
 Create Kluster CRD
 
-```
+```sh
 kubectl create -f manifests/viveksingh.dev_klusters.yaml
 ```
 
 Create RBAC resources and deployment
 
-```
+```sh
 kubectl create -f manifests/install/
 ```
 
@@ -47,14 +46,30 @@ kubectl create -f manifests/install/
 To call DigitalOcean APIs we will have to create a secret with DigitalOcean token that
 will be used in the Kluster CR that we create.
 
-```
+```sh
 kubectl create secret generic dosecret --from-literal token=<your-DO-token>
 ```
 
 # Create a kluster CR
 
 Create the kluster resource to create a k8s cluster in DigitalOcean
 
-```
+```sh
 kubectl create -f manifests/klusterone.yaml
 ```
+
+# Updating CRD manifest
+
+Update the CRD manifest (`manifests/viveksingh.dev_klusters.yaml`) using docker:
+
+```sh
+docker buildx build --file hack/Dockerfile.update-crds -o . .
+```
+
+# Updating the auto-generated code
+
+Update the auto-generated code (`pkg/client/` and `pkg/apis/viveksingh.dev/v1alpha1/zz_generated.deepcopy.go`) using docker:
+
+```sh
+docker buildx build --file hack/Dockerfile.update-codegen -o . .
+```

hack/Dockerfile.update-codegen

@@ -0,0 +1,14 @@
+# hack/Dockerfile.update-codegen
+
+# Usage: docker buildx build --file hack/Dockerfile.update-codegen -o . .
+
+FROM golang:1.13 AS build
+WORKDIR /go/src/github.com/viveksinghggits/kluster
+RUN go mod download k8s.io/[email protected]
+COPY . .
+RUN bash /go/pkg/mod/k8s.io/[email protected]/generate-groups.sh all \
+    github.com/viveksinghggits/kluster/pkg/client github.com/viveksinghggits/kluster/pkg/apis viveksingh.dev:v1alpha1 \
+    --go-header-file /go/pkg/mod/k8s.io/[email protected]/hack/boilerplate.go.txt
+
+FROM scratch
+COPY --from=build /go/src/github.com/viveksinghggits/kluster/pkg pkg

hack/Dockerfile.update-crds

@@ -0,0 +1,14 @@
+# hack/Dockerfile.update-crds
+
+# Usage: docker buildx build --file hack/Dockerfile.update-crds -o . .
+
+FROM golang:1.13 AS build
+WORKDIR /go/src/github.com/viveksinghggits/kluster
+RUN GO111MODULE=on go get sigs.k8s.io/controller-tools/cmd/[email protected]
+COPY . .
+RUN controller-gen paths=github.com/viveksinghggits/kluster/pkg/apis/viveksingh.dev/v1alpha1 \
+    crd:crdVersions=v1 \
+    output:crd:artifacts:config=manifests
+
+FROM scratch
+COPY --from=build /go/src/github.com/viveksinghggits/kluster/manifests manifests