diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..572406b
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,2 @@
+/node_modules
+package-lock.json
\ No newline at end of file
diff --git a/DOCKERFILE b/DOCKERFILE
index 1d804d2..df2d76c 100644
--- a/DOCKERFILE
+++ b/DOCKERFILE
@@ -1,7 +1,4 @@
 FROM node:latest
-
 WORKDIR /app
-
 COPY . /app
-
-CMD ["npm", "run", "start"]
\ No newline at end of file
+CMD npm start
\ No newline at end of file
diff --git a/api/v1/admin/getUnverifiedUsers.js b/api/v1/admin/getUnverifiedUsers.js
index de37355..6513e7b 100644
--- a/api/v1/admin/getUnverifiedUsers.js
+++ b/api/v1/admin/getUnverifiedUsers.js
@@ -1,7 +1,7 @@
 const express = require('express');
 const jwt = require('jsonwebtoken');
 
-const {getUnverifiedUsers} = require("../../../libs/mysql.js")
+const { getConnection, getUnverifiedUsers } = require("../../../libs/mysql.js")
 
 const router = express.Router();
 
@@ -26,7 +26,9 @@ router.post('/', async (req, res) => {
         return res.status(400).send({error: "invalid token"});
     }
 
-    const users = await getUnverifiedUsers();
+    const connection = await getConnection();
+    const users = await getUnverifiedUsers(connection);
+    connection.end();
     res.status(200).send(users);
 });
 
diff --git a/api/v1/admin/verifyUser.js b/api/v1/admin/verifyUser.js
index 69ccd56..5b2b8c8 100644
--- a/api/v1/admin/verifyUser.js
+++ b/api/v1/admin/verifyUser.js
@@ -1,7 +1,7 @@
 const express = require('express');
 const jwt = require('jsonwebtoken');
 
-const {setVerified, getUser} = require("../../../libs/mysql.js")
+const { getConnection, setVerified, getUser } = require("../../../libs/mysql.js")
 
 const router = express.Router();
 
@@ -26,7 +26,9 @@ router.post('/', async (req, res) => {
         return res.status(400).send({error: "invalid token"});
     }
 
-    const user = await getUser(username);
+    const connection = await getConnection();
+
+    const user = await getUser(connection, username);
 
     if (!user[0]) {
         return res.status(400).send({error: "invalid userid"});
@@ -37,6 +39,7 @@ router.post('/', async (req, res) => {
     }
 
     await setVerified(username);
+    connection.end()
     res.status(200).send({message: "user verified"});
 });
 
diff --git a/api/v1/auth/login.js b/api/v1/auth/login.js
index be3105f..78bf402 100644
--- a/api/v1/auth/login.js
+++ b/api/v1/auth/login.js
@@ -2,14 +2,16 @@ const express = require('express');
 const jwt = require('jsonwebtoken');
 const sha256 = require("sha256");
 
-const { getUser } = require("../../../libs/mysql");
+const { getConnection, getUser } = require("../../../libs/mysql");
 
 const router = express.Router();
 
 router.post('/', async (req, res) => {
     const {username, password} = req.body;
 
-    const user = await getUser(username);
+    const connection = await getConnection();
+
+    const user = await getUser(connection, username);
 
     if (!user[0]) {
         return res.status(400).send({error: "wrong login informations"});
diff --git a/api/v1/auth/register.js b/api/v1/auth/register.js
index 77dc990..97a8310 100644
--- a/api/v1/auth/register.js
+++ b/api/v1/auth/register.js
@@ -1,7 +1,7 @@
 const express = require('express');
 const sha256 = require("sha256");
 
-const { getUser, addUser } = require("../../../libs/mysql");
+const { getConnection, getUser, addUser } = require("../../../libs/mysql");
 
 const router = express.Router();
 
@@ -12,13 +12,16 @@ router.post('/', async (req, res) => {
         return res.status(400).send({error: "invalid request"});
     }
 
-    const user = await getUser(username);
+    const connection = await getConnection();
+
+    const user = await getUser(connection, username);
 
     if (user[0]) {
         return res.status(400).send({error: "user already exist"});
     }
 
-    await addUser(username, name, lastname, sha256(password));
+    await addUser(connection, username, name, lastname, sha256(password));
+    connection.end();
     res.status(200).send({message: "success"});
 });
 
diff --git a/api/v1/games/addHelper.js b/api/v1/games/addHelper.js
index 9465264..c7895dd 100644
--- a/api/v1/games/addHelper.js
+++ b/api/v1/games/addHelper.js
@@ -1,7 +1,7 @@
 const express = require('express');
 const jwt = require('jsonwebtoken');
 
-const {addHelper, getGame} = require("../../../libs/mysql.js")
+const { getConnection, addHelper, getGame } = require("../../../libs/mysql.js")
 
 const router = express.Router();
 
@@ -22,8 +22,10 @@ router.post('/', async (req, res) => {
         if (user.expiration < Date.now()) {
             return res.status(400).send({error: "token expired"});
         }
+
+        const connection = getConnection();
         
-        const game = await getGame(gameid);
+        const game = await getGame(connection, gameid);
 
         if (!game[0]) {
             return res.status(400).send({error: "this game doesn't exist"});
@@ -33,7 +35,8 @@ router.post('/', async (req, res) => {
             return res.status(400).send({error: "you are already an helper for this game"});
         }
 
-        await addHelper(user.user.username, gameid);
+        await addHelper(connection, user.user.username, gameid);
+        connection.end();
     } catch (error) {
         console.log(error);
         return res.status(400).send({error: "invalid token"});
diff --git a/api/v1/games/getGame.js b/api/v1/games/getGame.js
index efdb2ab..f3f29de 100644
--- a/api/v1/games/getGame.js
+++ b/api/v1/games/getGame.js
@@ -1,7 +1,7 @@
 const express = require('express');
 const jwt = require('jsonwebtoken');
 
-const {getGame} = require("../../../libs/mysql.js")
+const { getConnection, getGame } = require("../../../libs/mysql.js")
 
 const router = express.Router();
 
@@ -26,7 +26,9 @@ router.post('/', async (req, res) => {
         return res.status(400).send({error: "invalid token"});
     }
 
-    const game = await getGame(gameid)
+    const connection = getConnection();
+    const game = await getGame(connection, gameid)
+    connection.end();
 
     if (!game[0]) {
         return res.status(400).send({error: "this game doesn't exist in the data base"})
diff --git a/api/v1/games/getHelpers.js b/api/v1/games/getHelpers.js
index b004fcb..b22442b 100644
--- a/api/v1/games/getHelpers.js
+++ b/api/v1/games/getHelpers.js
@@ -1,7 +1,7 @@
 const express = require('express');
 const jwt = require('jsonwebtoken');
 
-const {getHelpers} = require("../../../libs/mysql.js")
+const { getConnection, getHelpers } = require("../../../libs/mysql.js")
 
 const router = express.Router();
 
@@ -26,7 +26,9 @@ router.post('/', async (req, res) => {
         return res.status(400).send({error: "invalid token"});
     }
 
+    const connection = getConnection();
     const helpers = await getHelpers(gameid)
+    connection.end();
 
     if (!helpers[0]) {
         return res.status(400).send({error: "this game doesn't exist in the data base"})
diff --git a/api/v1/games/getall.js b/api/v1/games/getall.js
index 178641a..21563dd 100644
--- a/api/v1/games/getall.js
+++ b/api/v1/games/getall.js
@@ -1,7 +1,7 @@
 const express = require('express');
 const jwt = require('jsonwebtoken');
 
-const {getGames} = require("../../../libs/mysql.js")
+const { getConnection, getGames } = require("../../../libs/mysql.js")
 
 const router = express.Router();
 
@@ -22,7 +22,9 @@ router.post('/', async (req, res) => {
         return res.status(400).send({error: "invalid token"});
     }
 
+    const connection = getConnection();
     const games = await getGames();
+    connection.end();
     res.status(200).send(games);
 });
 
diff --git a/api/v1/games/removeHelper.js b/api/v1/games/removeHelper.js
index 2298967..5231de1 100644
--- a/api/v1/games/removeHelper.js
+++ b/api/v1/games/removeHelper.js
@@ -1,7 +1,7 @@
 const express = require('express');
 const jwt = require('jsonwebtoken');
 
-const {removeHelper, getGame} = require("../../../libs/mysql.js")
+const { getConnection, removeHelper, getGame } = require("../../../libs/mysql.js")
 
 const router = express.Router();
 
@@ -23,6 +23,7 @@ router.post('/', async (req, res) => {
             return res.status(400).send({error: "token expired"});
         }
 
+        const connection = getConnection();
         const game = await getGame(gameid);
 
         if (!game[0]) {
@@ -34,6 +35,7 @@ router.post('/', async (req, res) => {
         }
 
         await removeHelper(user.user.username, gameid);
+        connection.end()
     } catch {
         return res.status(400).send({error: "invalid token"});
     }
diff --git a/libs/mysql.js b/libs/mysql.js
index 6721206..a69f65f 100644
--- a/libs/mysql.js
+++ b/libs/mysql.js
@@ -1,19 +1,21 @@
 const mysql = require("mysql");
 
-const con = mysql.createConnection({
-  host: process.env.MysqlHost,
-  user: process.env.MysqlUser,
-  password: process.env.MysqlPassword,
-  database: process.env.MysqlDb,
-});
+export function getConnection() {
+  return mysql.createConnection({
+    host: process.env.MysqlHost,
+    user: process.env.MysqlUser,
+    password: process.env.MysqlPassword,
+    database: process.env.MysqlDb,
+  });
+}
 
 // +-----------------------------------+
 // |              GAMES                |
 // +-----------------------------------+
 
-function getGames() {
+export function getGames(connection) {
   return new Promise((resolve, reject) => {
-    con.query(
+    connection.query(
       `SELECT id, title, subtitle, type, players, duration, ages FROM games`,
       (error, result) => {
         if (error) {
@@ -25,9 +27,9 @@ function getGames() {
   });
 }
 
-function getGame(gameid) {
+export function getGame(connection, gameid) {
   return new Promise((resolve, reject) => {
-    con.query(
+    connection.query(
       `SELECT * FROM games WHERE id = "${gameid}"`,
       (error, result) => {
         if (error) {
@@ -39,9 +41,9 @@ function getGame(gameid) {
   })
 }
 
-function addHelper(username, gameid) {
+export function addHelper(connection, username, gameid) {
   return new Promise((resolve, reject) => {
-    con.query(
+    connection.query(
       `UPDATE games SET helpers = JSON_ARRAY_APPEND(helpers, '$', "${username}") WHERE id = ${gameid}`,
       (error, result) => {
         if (error) {
@@ -53,9 +55,9 @@ function addHelper(username, gameid) {
   })
 }
 
-function removeHelper(username, gameid) {
+export function removeHelper(connection, username, gameid) {
   return new Promise((resolve, reject) => {
-    con.query(
+    connection.query(
       `UPDATE games SET helpers = JSON_REMOVE(helpers, JSON_UNQUOTE(JSON_SEARCH(helpers, 'one', "${username}"))) WHERE id = ${gameid}`,
       (error, result) => {
         if (error) {
@@ -67,9 +69,9 @@ function removeHelper(username, gameid) {
   });
 }
 
-function getHelpers(gameid) {
+export function getHelpers(connection, gameid) {
   return new Promise((resolve, reject) => {
-    con.query(
+    connection.query(
       `SELECT helpers FROM games WHERE id = "${gameid}"`,
       (error, result) => {
         if (error) {
@@ -85,9 +87,9 @@ function getHelpers(gameid) {
 // |               AUTH                |
 // +-----------------------------------+
 
-function getUser(username) {
+export function getUser(connection, username) {
   return new Promise((resolve, reject) => {
-    con.query(
+    connection.query(
       `SELECT * FROM users WHERE username = "${username}"`,
       (error, result) => {
         if (error) {
@@ -98,9 +100,9 @@ function getUser(username) {
   }) 
 }
 
-function addUser(username, name, lastname, password) {
+export function addUser(connection, username, name, lastname, password) {
   return new Promise((resolve, reject) => {
-    con.query(
+    connection.query(
       `INSERT INTO users(username, name, lastname, password) VALUES("${username}", "${name}", "${lastname}", "${password}")`,
       (error, result) => {
         if (error) {
@@ -115,9 +117,9 @@ function addUser(username, name, lastname, password) {
 // |              ADMIN                |
 // +-----------------------------------+
 
-function getUnverifiedUsers() {
+export function getUnverifiedUsers(connection) {
   return new Promise((resolve, reject) => {
-    con.query(
+    connection.query(
       `SELECT * FROM users WHERE verified = 0`,
       (error, result) => {
         if (error) {
@@ -128,9 +130,9 @@ function getUnverifiedUsers() {
   }) 
 }
 
-function setVerified(username) {
+export function setVerified(connection, username) {
   return new Promise((resolve, reject) => {
-    con.query(
+    connection.query(
       `UPDATE users SET verified = 1 WHERE username = "${username}"`,
       (error, result) => {
         if (error) {
@@ -139,18 +141,4 @@ function setVerified(username) {
         resolve(result);
       })
   }) 
-}
-
-module.exports = {
-  getGames,
-  getGame,
-  addHelper,
-  removeHelper,
-  getHelpers,
-
-  getUser,
-  addUser,
-
-  getUnverifiedUsers,
-  setVerified,
-};
\ No newline at end of file
+}
\ No newline at end of file