feat: add MongoDB and Mongo Express services with initialization script

server/mongodb/initdb.d/mongo-init.js

@@ -0,0 +1,33 @@
+db = db.getSiblingDB("statistics");
+
+db.createRole({
+  role: "statsReadWrite",
+  privileges: [
+    {
+      resource: {
+        db: "statistics",
+        collection: "peertube",
+      },
+      actions: ["insert"],
+    },
+  ],
+  roles: [
+    {
+      role: "read",
+      db: "statistics",
+    },
+  ],
+});
+
+db.createUser({
+    user: "stats_user",
+    pwd: "@z^VFhN7q%vzit",
+    roles: [
+      {
+        role: 'statsReadWrite',
+        db: 'statistics',
+      },
+    ],
+  });
+
+db.createCollection("peertube");