deploy: Update K8s for secrets

Add secrets for storing the Mixpanel token in the K8s environment.

README.md

@@ -15,7 +15,7 @@ The API has the following endpoints:
 - Type: `POST`
 - Path: `/api/v1/feel/evaluate`
 
-Request: 
+Request:
 
 ```json
 {
@@ -41,7 +41,7 @@ Response:
 - Type: `POST`
 - Path: `/api/v1/feel-unary-tests/evaluate`
 
-Request: 
+Request:
 
 ```json
 {
@@ -89,6 +89,12 @@ kubectl create namespace feel
 kubectl apply -f service.yaml -n feel
 ```
 
+To deploy the secrets, edit `secret.yaml` and set `mixpanel_project_token` to your Mixpanel project token. Then run the following:
+
+```shell
+kubectl apply -f secret.yaml -n feel
+```
+
 To deploy the rest api, edit `deployment.yaml` and set `spec.template.spec.containers[0].img` to point
 to the latest docker image. Then run the following:
 

k8s/deployment.yaml

@@ -21,3 +21,9 @@ spec:
               port: 8080
             initialDelaySeconds: 10
             timeoutSeconds: 5
+          env:
+            - name: MIXPANEL_PROJECT_TOKEN
+              valueFrom:
+                secretKeyRef:
+                  name: feel-scala-playground-secret
+                  key: mixpanel_project_token

k8s/secret.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: feel-scala-playground-secret
+type: Opaque
+stringData:
+  mixpanel_project_token: x