added grafana and minor fix

grafana/provisioning/dashboards/dashboards.yaml

@@ -0,0 +1,11 @@
+apiVersion: 1
+
+providers:
+  - name: 'dereth_dashboards'
+    orgId: 1
+    folder: ''
+    type: file
+    disableDeletion: false
+    updateIntervalSeconds: 30
+    options:
+      path: /var/lib/grafana/dashboards

grafana/provisioning/datasources/datasource.yaml

@@ -0,0 +1,16 @@
+apiVersion: 1
+
+datasources:
+  - name: DerethDB
+    uid: dereth-db
+    type: postgres
+    access: proxy
+    url: db:5432
+    database: dereth
+    user: postgres
+    # Securely provision the password
+    secureJsonData:
+      password: ${POSTGRES_PASSWORD}
+    jsonData:
+      sslmode: disable
+      postgresVersion: 1400