diff --git a/Dockerfile b/Dockerfile
index 43f5b69..e283912 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,15 +1,18 @@
-FROM keymetrics/pm2:latest-alpine
+FROM node:18
 
-# Bundle APP files
-COPY src src/
-COPY package.json .
-COPY pm2.json .
+# Create app directory
+WORKDIR /usr/src/app
 
 # Install app dependencies
-ENV NPM_CONFIG_LOGLEVEL warn
-RUN npm install --production
+# A wildcard is used to ensure both package.json AND package-lock.json are copied
+# where available (npm@5+)
+COPY package*.json ./
 
-# Show current folder structure in logs
-RUN ls -al -R
+RUN npm install
+# If you are building your code for production
+# RUN npm ci --only=production
 
-CMD [ "pm2-runtime", "start", "pm2.json" ]
+# Bundle app source
+COPY . .
+
+CMD [ "node", "src/bin/www" ]
diff --git a/pm2.json b/pm2.json
index 4109d6e..3ce2555 100644
--- a/pm2.json
+++ b/pm2.json
@@ -1,7 +1,7 @@
 {
     "name": "ushio-session",
     "script": "src/bin/www",
-    "instances": "2",
+    "instances": "1",
     "env": {
         "NODE_ENV": "development"
     },
diff --git a/src/app.js b/src/app.js
index a9ee59b..4d31e01 100644
--- a/src/app.js
+++ b/src/app.js
@@ -6,7 +6,7 @@ var cookieParser = require('cookie-parser');
 var logger = require('morgan');
 var expressWs = require('express-ws');
 
-var indexRouter = require('./routes/index');
+var indexRouter = require(__dirname+'/routes/index');
 //var usersRouter = require('./routes/users');
 var app = express();
 
diff --git a/src/bin/www b/src/bin/www
index 83706e9..a23bb46 100755
--- a/src/bin/www
+++ b/src/bin/www
@@ -4,7 +4,7 @@
  * Module dependencies.
  */
 
-var app = require('../app');
+var app = require(__dirname+'/../app');
 var debug = require('debug')('ushio-session:server');
 var http = require('http');