chore: add production env vars and readiness probe to admin app

k8s/jam-cloud/admin.yaml

@@ -27,8 +27,20 @@ spec:
         ports:
         - containerPort: 8080
         env:
+        - name: RAILS_ENV
+          value: "production"
+        - name: RAILS_LOG_TO_STDOUT
+          value: "true"
+        - name: SECRET_KEY_BASE
+          value: "a7b8c9d0e1f2g3h4i5j6k7l8m9n0o1p2q3r4s5t6u7v8w9x0y1z2a3b4c5d6e7f8"
         - name: DATABASE_URL
           value: "postgres://jam:jam@72.14.176.182:5432/jam"
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 8080
+          initialDelaySeconds: 10
+          periodSeconds: 5
 ---
 apiVersion: v1
 kind: Service