Fix Docker & migrate to NodeJS14

Dockerfile

-FROM node:12.13-slim
+FROM node:14-slim
 
 # Create app directory
 WORKDIR /app

src/legacy/token.service.ts

 import { Injectable, InternalServerErrorException, Logger } from "@nestjs/common";
-import { ConfigService } from "configuration/config.service";
-import { Redis } from "helpers/redis.helper";
+import { ConfigService } from "../configuration/config.service";
+import { Redis } from "../helpers/redis.helper";
 import * as request from 'request-promise-native';
 import * as jwt from 'jsonwebtoken';
-
+import { JWTToken } from './legacy.model';
 
 interface TokenInfos{  
     access_token: string;
@@ -43,11 +43,18 @@ export class TokenService {
         if (Date.now() >= token_data.exp * 1000) {
           tokenInfos= await this.renewToken(email,tokenInfos);
         }
-
         
         return tokenInfos;
+    }
+
+    async getAccessToken(kongToken: JWTToken): Promise<string> {
+      const email = kongToken.email;
 
+      const tokenInfos = await this.getTokenInfos(email)
+
+      return tokenInfos.access_token;
     }
+
   async renewToken(email:String,tokenInfos: TokenInfos): Promise<any> {
     const idpConf = this.conf.providers['OIDC'];
 
@@ -81,4 +88,4 @@ export class TokenService {
  
 
     
-}
\ No newline at end of file
+}