Add role-based filtering and imporve code

infrastructure/kubernetes/base/components/demo-session/deployment.yaml

@@ -19,14 +19,14 @@ spec:
     spec:
       serviceAccountName: demo-session-sa
       containers:
-      - name: demo-session
+      - name: demo-session-service
         image: bakery/demo-session-service:latest
         ports:
         - containerPort: 8000
           name: http
         env:
         - name: SERVICE_NAME
-          value: "demo-session"
+          value: "demo-session-service"
         - name: DEMO_SESSION_DATABASE_URL
           valueFrom:
             secretKeyRef:
@@ -82,3 +82,14 @@ spec:
             port: 8000
           initialDelaySeconds: 10
           periodSeconds: 10
+        startupProbe:
+          httpGet:
+            path: /health
+            port: 8000
+          initialDelaySeconds: 10
+          periodSeconds: 5
+          failureThreshold: 30
+      initContainers:
+      - name: wait-for-redis
+        image: busybox:1.36
+        command: ['sh', '-c', 'until nc -z redis-service 6379; do echo waiting for redis; sleep 2; done']