🚀(helm) add a Redis cache service

This commit is working in progress. I have added an extra chart to take
benefits of the Redis operator developed by Indie hoster.

When using the dev environment, I used bitnami redis chart to deploy
a Redis service with authentication disable.

src/helm/env.d/dev/values.desk.yaml.gotmpl

@@ -34,6 +34,7 @@ backend:
     POSTGRES_DB: people
     POSTGRES_USER: dinum
     POSTGRES_PASSWORD: pass
+    REDIS_URL: redis://default:pass@redis-master:6379/1
 
 frontend:
   image:

src/helm/env.d/staging/values.desk.yaml.gotmpl

@@ -58,6 +58,10 @@ backend:
       secretKeyRef:
         name: postgresql.postgres.libre.sh
         key: password
+    REDIS_URL:
+      secretKeyRef:
+        name: redis.redis.libre.sh
+        key: url
 
 frontend:
   image:

src/helm/extra/templates/keydb.yaml

@@ -0,0 +1,7 @@
+apiVersion: core.libre.sh/v1alpha1
+kind: Redis
+metadata:
+  name: redis
+  namespace: {{ .Release.Namespace | quote }}
+spec:
+  disableAuth: false

src/helm/helmfile.yaml

@@ -18,6 +18,15 @@ releases:
           enabled: true
           autoGenerated: true
 
+  - name: redis
+    installed: {{ eq .Environment.Name "dev" | toYaml }}
+    namespace: {{ .Namespace }}
+    chart: bitnami/redis
+    version: 18.19.2
+    values:
+      - auth:
+          password: pass
+
   - name: extra
     installed: {{ ne .Environment.Name "dev" | toYaml }}
     namespace: {{ .Namespace }}