Update 'Deployment'

Deployment.md

@@ -0,0 +1,96 @@
+`pages` is written with the [12factor](https://12factor.net) principals. It attempts to use a reasonable set of defaults and should be easy to configure across Docker, Kubernetes, and Nomad.
+
+## Docker
+
+TBD
+
+## Kubernetes
+
+**Create a secret**
+
+```shell
+kubectl create secret generic pages-secret \
+    --from-literal "PAGES_GIT_BRANCH=gh-pages" \
+    --from-literal "PAGES_GIT_URL=https://github.com/mjpitz/mjpitz.git"
+```
+
+**Chart.yaml**
+
+```yaml
+apiVersion: v2
+type: application
+name: pages
+version: 0.0.0
+appVersion: 0.0.0
+dependencies:
+  - name: 12factor
+    repository: https://mjpitz.com
+    version: 22.5.0
+```
+
+**values.yaml**
+
+```yaml
+12factor:
+  nameOverride: pages
+
+  image:
+    repository: img.pitz.tech/mya/pages
+    tag: latest
+
+  deployment:
+    replicaCount: 2
+
+    application:
+      envFrom:
+        - secretRef:
+            name: pages-secret
+      ports:
+        - name: http
+          containerPort: 8080
+          protocol: TCP
+        - name: debug
+          containerPort: 8081
+          protocol: TCP
+
+  networking:
+    service:
+      ports:
+        - name: http
+          targetPort: http
+          protocol: TCP
+          port: 8080
+        - name: debug
+          targetPort: debug
+          protocol: TCP
+          port: 8081
+
+    ingress:
+      enabled: true
+      annotations:
+        # certificate
+        kubernetes.io/tls-acme: "true"
+        cert-manager.io/cluster-issuer: "letsencrypt-prod"
+        # controller
+        kubernetes.io/ingress.class: nginx
+        nginx.ingress.kubernetes.io/enable-cors: "true"
+        nginx.ingress.kubernetes.io/ssl-redirect: "true"
+        nginx.ingress.kubernetes.io/proxy-read-timeout: "3600"
+        nginx.ingress.kubernetes.io/proxy-send-timeout: "3600"
+        nginx.ingress.kubernetes.io/connection-proxy-header: "keep-alive,Upgrade"
+        nginx.ingress.kubernetes.io/configuration-snippet: |
+          proxy_set_header Upgrade "websocket";
+      hosts:
+        - host: example.com
+          paths:
+            - path: /
+              pathType: Prefix
+      tls:
+        - secretName: example-tls
+          hosts:
+            - example.com
+```
+
+## Nomad
+
+TBD