diff --git a/.env.sample b/.env.sample
deleted file mode 100644
index d371062..0000000
--- a/.env.sample
+++ /dev/null
@@ -1,10 +0,0 @@
-PORT=8080
-
-HCAPTCHA_SECRET=0xXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
-
-MAIL_FROM="My contact form <mailer@myserver.tld>"
-MAIL_TO=me@myserver.tld
-
-MAIL_SERVER=mail.myserver.tld
-MAIL_USER=mailer@myserver.tld
-MAIL_PASS=XXXXXXXXXXXXXXXXXXXXXXX
diff --git a/docker-compose.yml.sample b/docker-compose.yml.sample
index 8e2ee7b..914c593 100644
--- a/docker-compose.yml.sample
+++ b/docker-compose.yml.sample
@@ -4,7 +4,13 @@ services:
     build: .
     restart: unless-stopped
     container_name: mailapi
-    env_file:
-      - .env
+    environment:
+      - PORT=8080
+      - HCAPTCHA_SECRET=0xXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+      - MAIL_FROM="My contact form <mailer@myserver.tld>"
+      - MAIL_TO=me@myserver.tld
+      - MAIL_SERVER=mail.myserver.tld
+      - MAIL_USER=mailer@myserver.tld
+      - MAIL_PASS=XXXXXXXXXXXXXXXXXXXXXXX
     ports:
       - "8080:8080/tcp"
diff --git a/index.js b/index.js
index 7241f28..5fba73e 100644
--- a/index.js
+++ b/index.js
@@ -4,6 +4,7 @@ require('dotenv').config()
 const express = require('express')
 const app = express()
 const {verify} = require('hcaptcha')
+const PORT = process.env.PORT || 8080
 
 const mailer = require('nodemailer').createTransport({
 	host: process.env.MAIL_SERVER,
@@ -59,6 +60,6 @@ app.post('/', async (req, res) => {
 	} else return res.sendStatus(403)
 })
 
-app.listen(process.env.PORT, () => {
-	console.log(`API listening on ${process.env.PORT}`)
+app.listen(PORT, () => {
+	console.log(`API listening on ${PORT}`)
 })