Generate adoc copies in /content/en/docs to shipwright-io#78

Gemfile.lock

@@ -8,6 +8,3 @@ PLATFORMS
 
 DEPENDENCIES
   asciidoctor (~> 2.0, >= 2.0.17)
-
-BUNDLED WITH
-   2.3.7

content/en/docs/authentication.md

@@ -1,5 +1,5 @@
 ---
-title: Authentication during builds
+title: Authentication during builds test
 ---
 
 The following document provides an introduction around the different authentication methods that can take place during an image build when using the Build controller.

content/en/docs/profiling-test.adoc

@@ -0,0 +1,42 @@
+= Build Controller Profiling
+:linkTitle: Profiling
+
+The build controller supports a `pprof` profiling mode, which is omitted from the binary by default. To use the profiling, use the controller image that was built with `pprof` enabled.
+
+== Enable `pprof` in the build controller
+
+In the Kubernetes cluster, edit the `shipwright-build-controller` deployment to use the container tag with the `debug` suffix.
+
+[,sh]
+----
+kubectl --namespace <namespace> set image \
+  deployment/shipwright-build-controller \
+  shipwright-build-controller="$(kubectl --namespace <namespace> get deployment shipwright-build-controller --output jsonpath='{.spec.template.spec.containers[].image}')-debug"
+----
+
+== Connect `go pprof` to build controller
+
+Depending on the respective setup, there could be multiple build controller pods for high availability reasons. In this case, you have to look-up the current leader first. The following command can be used to verify the currently active leader:
+
+[,sh]
+----
+kubectl --namespace <namespace> get configmap shipwright-build-controller-lock --output json \
+  | jq --raw-output '.metadata.annotations["control-plane.alpha.kubernetes.io/leader"]' \
+  | jq --raw-output .holderIdentity
+----
+
+The `pprof` endpoint is not exposed in the cluster and can only be used from inside the container. Therefore, set-up port-forwarding to make the `pprof` port available locally.
+
+[,sh]
+----
+kubectl --namespace <namespace> port-forward <controller-pod-name> 8383:8383
+----
+
+Now, you can setup a local webserver to browse through the profiling data.
+
+[,sh]
+----
+go tool pprof -http localhost:8080 http://localhost:8383/debug/pprof/heap
+----
+
+_Please note:_ For it to work, you have to have `graphviz` installed on your system, for example using `brew install graphviz`, `apt-get install graphviz`, `yum install graphviz`, or similar.