From 04525df9fa267d7daf2a43eefd0fba2280a3bf00 Mon Sep 17 00:00:00 2001
From: Jeddunk <jedithug985@cock.li>
Date: Sun, 17 Jan 2021 20:29:27 +0100
Subject: [PATCH] define port in environment variable

---
 Dockerfile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 2806337..879cff1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,5 @@
+ARG PORT=3000
+ENV PORT=$PORT
 # Use the official lightweight Node.js 12 image.
 # https://hub.docker.com/_/node
 FROM node:12-alpine
@@ -11,6 +13,6 @@ COPY / ./
 RUN npm install
 # Compile to production
 RUN npm run build
-EXPOSE 3000
+EXPOSE ${PORT}
 # Run the web service on container startup.
 CMD [ "npm", "start" ]
\ No newline at end of file