Add bootstrapping scripts and nix expressions

bootstrap/bin/install-namespace.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+
+TOP="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)/.."
+
+if [ x$1 = x ]; then
+    ehco "usage: install-namespace.sh {namespace}"
+    exit 1
+fi
+
+namespace=$1
+tmpfile=/tmp/new-$namespace.$$
+
+cat << EOF > $tmpfile
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    name: $namespace
+  name: $namespace
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: gitlab-registry-auth
+  namespace: $namespace
+data:
+  .dockerconfigjson: eyJhdXRocyI6eyJodHRwczovL3JlZ2lzdHJ5Lml0cGFydG5lci5ubyI6eyJ1c2VybmFtZSI6ImpvbmFzIiwicGFzc3dvcmQiOiJTRldwLVk0bkVfdXpNZFJxeHp6SyIsImF1dGgiOiJhbTl1WVhNNlUwWlhjQzFaTkc1RlgzVjZUV1JTY1hoNmVrcz0ifX19
+type: kubernetes.io/dockerconfigjson
+EOF
+
+kubectl apply -f $tmpfile
+
+rm $tmpfile