Update backend with init container

charts/my-recipes-chart/templates/backend-deployment.yaml

@@ -17,6 +17,50 @@ spec:
         app: {{ .Release.Name }}-{{ .Values.backend.name }}
         component: backend
     spec:
+      initContainers:
+        - name: db-migration
+          image: postgres:16-alpine
+          command:
+            - /bin/sh
+            - -c
+            - |
+              echo "Waiting for database to be ready..."
+              until pg_isready -h $DB_HOST -U $DB_USER; do
+                echo "Database not ready, waiting..."
+                sleep 2
+              done
+              echo "Database is ready, running migration..."
+              PGPASSWORD=$DB_PASSWORD psql -h $DB_HOST -U $DB_USER -d $DB_NAME -f /migration/migrate.sql
+              echo "Migration completed successfully"
+          env:
+            - name: DB_HOST
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-db-credentials
+                  key: DB_HOST
+            - name: DB_PORT
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-db-credentials
+                  key: DB_PORT
+            - name: DB_NAME
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-db-credentials
+                  key: DB_NAME
+            - name: DB_USER
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-db-credentials
+                  key: DB_USER
+            - name: DB_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-db-credentials
+                  key: DB_PASSWORD
+          volumeMounts:
+            - name: migration-script
+              mountPath: /migration
       containers:
         - name: {{ .Values.backend.name }}
           image: "{{ .Values.backend.image.repository }}:{{ .Values.backend.image.tag }}"
@@ -66,4 +110,8 @@ spec:
             limits:
               cpu: {{ .Values.backend.resources.limits.cpu }}
               memory: {{ .Values.backend.resources.limits.memory }}
+      volumes:
+        - name: migration-script
+          configMap:
+            name: {{ .Release.Name }}-db-migration