remove separate db deployment

cluster/apps/semaphore/semaphore.yml

@@ -15,16 +15,26 @@ spec:
         app: semaphore
     spec:
       initContainers:
-      - name: wait-for-db
-        image: busybox
-        command:
-        - sh
-        - -c
-        - |
-          until nc -z -v -w30 semaphore-db-service 3306; do
-            echo "Waiting for database to be ready..."
-            sleep 2
-          done
+      - name: mysql
+        image: mysql:8.4
+        restartPolicy: Always
+        ports:
+        - containerPort: 3306
+        env:
+        - name: MYSQL_RANDOM_ROOT_PASSWORD
+          value: "'yes'"
+        - name: MYSQL_DATABASE
+          value: "semaphore"
+        - name: MYSQL_USER
+          value: "semaphore"
+        - name: MYSQL_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: semaphore-secrets
+              key: mysql_password
+        volumeMounts:
+        - name: db
+          mountPath: /var/lib/mysql
       containers:
       - name: semaphore
         image: public.ecr.aws/semaphore/pro/server:v2.14.8
@@ -49,3 +59,7 @@ spec:
             secretKeyRef:
               name: semaphore-secrets
               key: key
+      volumes:
+      - name: db
+        persistentVolumeClaim:
+          claimName: longhorn-semaphore