fix: add an environment variable, VUE_APP_USER_EXPIRE_SEC for having the expiring time

web/src/store/modules/User.js

@@ -62,7 +62,14 @@ const actions = {
     (hr*3600000)
     */
     // const expiresIn = 60 * 1000
-    const expiresIn = 20000
+    // const expiresIn = 20000
+    let expiresIn = 20000
+    if ( process.env.VUE_APP_USER_EXPIRE_SEC ) {
+      expiresIn = parseInt( process.env.VUE_APP_USER_EXPIRE_SEC )
+    } else {
+      console.error( 'Please setup VUE_APP_USER_EXPIRE_SEC environment variable. Default expiration time is 20 seconds')
+    }
+
     const expirationDate = new Date().getTime() + expiresIn
     localStorage.setItem('tokenExpiration', expirationDate)
     commit('SET_USER_DATA', userData);