Add Helm chart for Kubernetes deployment

charts/xslt-playground/values.yaml

@@ -0,0 +1,58 @@
+replicaCount:
+  frontend: 1
+  backend: 1
+
+image:
+  frontend:
+    repository: xslt-playground-frontend
+    tag: "latest"
+    pullPolicy: IfNotPresent
+  backend:
+    repository: xslt-playground-backend
+    tag: "latest"
+    pullPolicy: IfNotPresent
+
+service:
+  frontend:
+    type: ClusterIP
+    port: 80
+  backend:
+    type: ClusterIP
+    port: 8000
+
+ingress:
+  enabled: true
+  className: ""
+  annotations: {}
+  hosts:
+    - host: xslt.local
+      paths:
+        - path: /
+          pathType: Prefix
+  tls: []
+
+resources:
+  frontend: {}
+  backend: {}
+
+hpa:
+  frontend:
+    enabled: true
+    minReplicas: 1
+    maxReplicas: 5
+    targetCPUUtilizationPercentage: 80
+  backend:
+    enabled: true
+    minReplicas: 1
+    maxReplicas: 5
+    targetCPUUtilizationPercentage: 80
+
+firebaseSecretName: firebase-config
+firebase:
+  credentialsKey: service-account.json
+  configKey: firebase-config.json
+  credentialsMountPath: /var/secrets/firebase
+
+# Example database URL
+databaseUrl: postgres://postgres:postgres@db/xslt?sslmode=disable
+