Provide basic deployment instructions

This commit introduces a Dockerfile with some basic deployment
instructions, as well as a makefile for convinience.

deploy/Dockerfile

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+FROM scratch
+
+COPY adapter /
+
+USER 1001:1001
+
+ENTRYPOINT ["/adapter"]
+

deploy/README.md

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+Example Deployment
+==================
+
+1. Make sure you've built the included Dockerfile with `make
+   docker-build`.  The image should be tagged as `cm-adapter:latest`.
+   
+2. Create a secret called `cm-adapter-serving-certs` with two values:
+   `serving.crt` and `serving.key`.  For more information on how to
+   generate these certificates, see the [auth concepts
+   documentation](https://github.com/kubernetes-incubator/apiserver-builder/blob/master/docs/concepts/auth.md)
+   in the apiserver-builder repository.
+
+3. `kubectl create -f example-deployment.yaml`, modifying as necessary to
+   point to your prometheus server.
+
+
+

deploy/example-deployment.yaml

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+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  labels:
+    app: cm-adapter
+  name: cm-adapter
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: cm-adapter
+  template:
+    metadata:
+      labels:
+        app: cm-adapter
+      name: cm-adapter
+    spec:
+      containers:
+      - name: cm-adapter
+        image: cm-adapter
+        imagePullPolicy: Never
+        args:
+        - "/cm-adapter"
+        - "--secure-port=6443"
+        - "--tls-cert-file=/var/run/serving-cert/serving.crt"
+        - "--tls-private-key-file=/var/run/serving-cert/serving.key"
+        - "--logtostderr=true"
+        - "--prometheus-url=http://prometheus.prom.svc:9090/"
+        - "--metrics-relist-interval=30s"
+        - "--rate-interval=30s"
+        - "--v=10"
+        ports:
+        - containerPort: 6443
+        volumeMounts:
+        - mountPath: /var/run/serving-cert
+          name: volume-serving-cert
+          readOnly: true
+      volumes:
+      - name: volume-serving-cert
+        secret:
+          secretName: cm-adapter-serving-certs