OpenShift Pipelines - Disconnected Install

First we need to install a couple of tools: (Assuming MacOS with HomeBrew here…)
```
brew install go podman ko
```
For Fedora or other linux distributions, check out the project sites for install instructions:
- Podman
- Go
- ko

Prepare a space for the OpenShift Pipelines Install:

mkdir ${OKD_LAB_PATH}/work-dir
cd ${OKD_LAB_PATH}/work-dir

Clone the operator code:

git clone https://github.com/tektoncd/operator.git
cd operator
git checkout v0.51.2

Mac OS: Start the Podman environment:

podman machine init
podman machine start

Select the Lab subdomain that you want to work with:
```
labctx
```

Log into the lab Nexus registry:

LOCAL_REGISTRY=$(yq e ".local-registry" ${OKD_LAB_PATH}/lab-config/${SUB_DOMAIN}-cluster.yaml)
podman login -u openshift-mirror ${LOCAL_REGISTRY}

Create a .docker/config.json file. KO does not use the podman auth.json file.
```
cp ~/.config/containers/auth.json ~/.docker/config.json
```

Log into the OpenShift cluster:

oc login -u admin https://api.okd4.${SUB_DOMAIN}.${LAB_DOMAIN}:6443

Create a proxy repository for

cat <<EOF | oc apply -f -
apiVersion: operator.openshift.io/v1alpha1
kind: ImageContentSourcePolicy
metadata:
  name: lab-registry
spec:
  repositoryDigestMirrors:
  - mirrors:
    - nexus.${LAB_DOMAIN}:5000
    source: gcr.io
EOF

Wait for the cluster nodes to restart as they apply the ImageContentSourcePolicy

You can watch the progress with:
```
oc get nodes
```

Build the OpenShift Pipelines operator and install it to your cluster:

export KO_DOCKER_REPO=${LOCAL_REGISTRY}/tekton
make TARGET=openshift CR=config/default apply 

After a couple of minutes, you should see the Tekton pods running in the openshift-pipelines namespace:
```
oc get pods -n openshift-pipelines
```

Finally, clean up after yourself:

 podman image rm -a
 podman machine stop
 cd
 rm -rf ${OKD_LAB_PATH}/work-dir

If you choose to uninstall pipelines:

mkdir ${OKD_LAB_PATH}/work-dir
cd ${OKD_LAB_PATH}/work-dir
git clone https://github.com/tektoncd/operator.git
cd operator
git checkout v0.51.2
oc login -u admin https://api.okd4.${SUB_DOMAIN}.${LAB_DOMAIN}:6443
make TARGET=openshift CR=config/default clean
cd
rm -rf ${OKD_LAB_PATH}/work-dir

cgruver