Fix nginx configuration issues with variable expansion

deploy.sh

@@ -99,17 +99,17 @@ else
   
   # Create a simpler nginx config for local deployment
   echo "Generating local nginx configuration..."
-  cat > nginx/app.conf << EOF
+  cat > nginx/app.conf << 'EOF'
 server {
     listen 80;
     server_name localhost;
     
     location / {
         proxy_pass http://web:8000;
-        proxy_set_header Host \$host;
-        proxy_set_header X-Real-IP \$remote_addr;
-        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto \$scheme;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
     }
 }
 EOF