enable prometheus ports, configure prometheus server

manifests/prometheus/deployment.yaml

@@ -0,0 +1,40 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: prometheus
+  namespace: darkdork-dev
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: prometheus
+  template:
+    metadata:
+      labels:
+        app: prometheus
+    spec:
+      imagePullSecrets:
+        - name: registry-credentials
+      containers:
+      - name: prometheus
+        image: prom/prometheus
+        imagePullPolicy: IfNotPresent
+        ports:
+        - containerPort: 9090
+        volumeMounts:
+        - name: prometheus-data
+          mountPath: /prometheus
+        - name: prometheus-config
+          mountPath: /etc/prometheus/prometheus.yaml
+          subPath: prometheus.yaml
+      volumes:
+      - name: prometheus-data
+        persistentVolumeClaim:
+          claimName: prometheus-pvc
+      - name: prometheus-config
+        configMap:
+          name: prometheus-config
+      securityContext:
+        fsGroup: 1000
+---