Add MongoDB initialization script and update deployment configurations

overleaf-helm-chart/templates/deployment-mongo.yaml

@@ -12,12 +12,18 @@ spec:
       labels:
         app: mongo
     spec:
+      hostAliases:
+        - ip: "127.0.0.1"
+          hostnames:
+            - "mongo"
       securityContext:
         runAsUser: 1001
         fsGroup: 0
       containers:
         - name: mongo
           image: {{ .Values.mongo.image }}
+          command: ["mongod"]
+          args: ["--replSet", "{{ .Values.mongo.replSet }}"]
           ports:
             - containerPort: {{ .Values.mongo.port }}
           env:
@@ -36,6 +42,9 @@ spec:
           volumeMounts:
             - name: mongo-data
               mountPath: {{ .Values.mongo.volumeMounts.db }}
+            - name: mongo-init
+              mountPath: /docker-entrypoint-initdb.d/mongo-init.js
+              subPath: mongo-init.js
           resources:
             requests:
               cpu: {{ .Values.resources.mongo.requests.cpu }}
@@ -46,4 +55,7 @@ spec:
       volumes:
         - name: mongo-data
           persistentVolumeClaim:
-            claimName: {{ .Values.persistence.mongoData }}
+            claimName: {{ .Values.persistence.mongoData }}
+        - name: mongo-init
+          configMap:
+            name: mongo-init-script