fixup

Dockerfile

@@ -1,7 +1,12 @@
 # Start from the official Nginx image
 FROM nginx:alpine
 
-# Copy our custom Nginx configuration
+# Copy our custom Nginx configuration and script
-COPY nginx.conf /etc/nginx/nginx.conf
+COPY nginx.conf /etc/nginx/nginx.conf.template
+COPY docker-entrypoint.sh /docker-entrypoint.sh
 
+# Make the script executable
+RUN chmod +x /docker-entrypoint.sh
+
+ENTRYPOINT ["/docker-entrypoint.sh"]
 

docker-entrypoint.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# Use envsubst to replace environment variables in nginx.conf.template and output to nginx.conf
+envsubst '$BACKEND_ADDRESS,$BACKEND_PORT' < /etc/nginx/nginx.conf.template > /etc/nginx/nginx.conf
+
+# Start nginx in the foreground
+exec nginx -g 'daemon off;'

nginx.conf

@@ -1,10 +1,6 @@
 user  nginx;
 worker_processes  1;
 
-# Load environment variables
-env BACKEND_ADDRESS;
-env BACKEND_PORT;
-
 events {
     worker_connections  1024;
 }
@@ -17,7 +13,7 @@ http {
         listen 80;
 
         location / {
-            # Use the environment variables for the proxy pass
+            # Use the placeholders for the proxy pass (these will be replaced by envsubst)
             proxy_pass http://$BACKEND_ADDRESS:$BACKEND_PORT;
             proxy_set_header Host $host;
             proxy_set_header X-Real-IP $remote_addr;