feat: ajouter init containers pour gérer l'ordre de démarrage

- Backend attend PostgreSQL et Redis avant de démarrer
- Frontend attend Backend avant de démarrer
- Utilise busybox avec netcat pour vérifier la connectivité

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: Clément VALENTIN

helm/myelectricaldata/templates/backend/backend-deployment.yaml

@@ -29,6 +29,19 @@ spec:
       securityContext:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      initContainers:
+        # Wait for PostgreSQL to be ready
+        {{- if .Values.postgres.enabled }}
+        - name: wait-for-postgres
+          image: busybox:1.36
+          command: ['sh', '-c', 'until nc -z {{ .Release.Name }}-postgres {{ .Values.postgres.service.port | default 5432 }}; do echo "Waiting for PostgreSQL..."; sleep 2; done; echo "PostgreSQL is ready!"']
+        {{- end }}
+        # Wait for Redis to be ready
+        {{- if .Values.redis.enabled }}
+        - name: wait-for-redis
+          image: busybox:1.36
+          command: ['sh', '-c', 'until nc -z {{ .Release.Name }}-redis {{ .Values.redis.service.port | default 6379 }}; do echo "Waiting for Redis..."; sleep 2; done; echo "Redis is ready!"']
+        {{- end }}
       containers:
         - name: backend
           {{- with .Values.backend.securityContext }}

helm/myelectricaldata/templates/frontend/frontend-deployment.yaml

@@ -25,6 +25,13 @@ spec:
       securityContext:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      initContainers:
+        # Wait for backend to be ready
+        {{- if .Values.backend.enabled }}
+        - name: wait-for-backend
+          image: busybox:1.36
+          command: ['sh', '-c', 'until nc -z {{ include "myelectricaldata.backend.fullname" . }} {{ .Values.backend.service.port | default 8000 }}; do echo "Waiting for Backend..."; sleep 2; done; echo "Backend is ready!"']
+        {{- end }}
       containers:
         - name: frontend
           {{- with .Values.frontend.securityContext }}