Connect to mongodb, define schemas

server/src/models/session.js

@@ -0,0 +1,20 @@
+import { model, Schema } from 'mongoose'
+
+export default model(
+  'Session',
+  {
+    name: String,
+    containerId: String,
+    user: {
+      type: Schema.ObjectId,
+      ref: 'User',
+    },
+    quest: {
+      type: Schema.ObjectId,
+      ref: 'Quest',
+    },
+    finishedAt: Date,
+    terminals: [String],
+  },
+  { timestamps: true }
+)