chore: allow users to set the REG_PORT for make dev using a envvar

on Macs the ControlCenter listens on the port 5000 so wanted to set
the 5001 port instead for REG_PORT
this change ensures that the user it able to set the
REG_PORT using an environment variable

Author: waveywaves

docs/content/docs/dev/_index.md

@@ -26,6 +26,16 @@ When it finishes, you will have the following installed in your kind cluster:
 - Pipelines as code deployed from your repo with ko.
 - Gitea service running locally so you can run the E2E tests against it (Gitea has the most comprehensive set of tests).
 
+### Configuring the Kind Registry Port
+
+By default, the Kind registry runs on port 5000. To use a different port, set the `REG_PORT` environment variable:
+
+```shell
+# Set a custom registry port
+export REG_PORT=5001
+make dev
+```
+
 By default, it will try to install from
 $GOPATH/src/github.com/openshift-pipelines/pipelines-as-code. To override it,
 set the `PAC_DIRS` environment variable.

hack/dev/kind/install.sh

@@ -46,7 +46,7 @@ if ! builtin type -p gosmee &>/dev/null; then
 fi
 
 TMPD=$(mktemp -d /tmp/.GITXXXX)
-REG_PORT='5000'
+REG_PORT=${REG_PORT:-'5000'}
 REG_NAME='kind-registry'
 INSTALL_FROM_RELEASE=
 PAC_PASS_SECRET_FOLDER=${PAC_PASS_SECRET_FOLDER:-""}
@@ -173,7 +173,7 @@ function install_pac() {
     if [[ -n ${PAC_DEPLOY_SCRIPT:-""} ]]; then
       ${PAC_DEPLOY_SCRIPT}
     else
-      env KO_DOCKER_REPO=localhost:5000 $ko apply -f config --sbom=none -B >/dev/null
+      env KO_DOCKER_REPO=localhost:${REG_PORT} $ko apply -f config --sbom=none -B >/dev/null
     fi
     cd ${oldPwd}
   fi
@@ -243,6 +243,7 @@ main() {
   install_pac
   [[ -z ${DISABLE_GITEA} ]] && install_gitea
   echo "And we are done :): "
+  echo "Using registry on localhost:${REG_PORT}"
 }
 
 function usage() {