Disable admin site caching

admin/server.js

@@ -265,6 +265,13 @@ async function start(){
         }
     })
 
+    app.use((_req, res, next) => {
+        res.setHeader('Cache-Control', 'no-store, no-cache, must-revalidate')
+        res.setHeader('Pragma', 'no-cache')
+        res.setHeader('Expires', '0')
+        next()
+    })
+
     app.use(express.json({ limit: '5mb' }))
     app.use('/uploads', express.static(UPLOADS_DIR))
     app.use('/admin/data/uploads', express.static(UPLOADS_DIR))