feat: Introduce DashboardCNameRecord for custom domain handling in dashboards

HelmChart/Public/oneuptime/templates/_helpers.tpl

@@ -72,6 +72,8 @@ Usage:
   value: {{ ternary "true" "false" $provisionSSL | quote }}
 - name: STATUS_PAGE_CNAME_RECORD
   value: {{ $.Values.statusPage.cnameRecord }}
+- name: DASHBOARD_CNAME_RECORD
+  value: {{ $.Values.dashboard.cnameRecord | default "" }}
 - name: ALLOWED_ACTIVE_MONITOR_COUNT_IN_FREE_PLAN
   value: {{ $.Values.billing.allowedActiveMonitorCountInFreePlan | quote }}
 - name: LOG_LEVEL

HelmChart/Public/oneuptime/values.schema.json

@@ -784,6 +784,15 @@
       },
       "additionalProperties": false
     },
+    "dashboard": {
+      "type": "object",
+      "properties": {
+        "cnameRecord": {
+          "type": ["string", "null"]
+        }
+      },
+      "additionalProperties": false
+    },
     "probes": {
       "type": "object",
       "patternProperties": {

HelmChart/Public/oneuptime/values.yaml

@@ -324,6 +324,14 @@ alerts:
 statusPage:
   cnameRecord:
 
+# If you would like to attach public dashboards to custom domains use this setting.
+# Works the same way as statusPage.cnameRecord but for dashboards.
+# For example, if you want dashboard.yourcompany.com to show a public dashboard:
+# 1. Set the dashboard.cnameRecord to "oneuptime.yourcompany.com"
+# 2. Create CNAME record in your DNS provider with the name "dashboard.yourcompany.com" and value "oneuptime.yourcompany.com"
+dashboard:
+  cnameRecord:
+
 probes:
   one:
     name: "Probe"