Update

proxy.sh

@@ -1,7 +1,8 @@
 #!/bin/bash
 
-# Read the PROXY environment variable
-PROXY=${PROXY:?Need to set PROXY environment variable. Format: PROXY=- listen: port1 upstream: host1:port1, ...}
+# Read the LISTEN and UPSTREAM environment variables
+LISTEN_9000_UPSTREAMS=${LISTEN_9000_UPSTREAMS:?Need to set LISTEN_9000_UPSTREAMS environment variable. Format: upstream_host1:upstream_port1,upstream_host2:upstream_port2,...}
+LISTEN_9001_UPSTREAMS=${LISTEN_9001_UPSTREAMS:?Need to set LISTEN_9001_UPSTREAMS environment variable. Format: upstream_host1:upstream_port1,upstream_host2:upstream_port2,...}
 
 # Start building the nginx.conf file
 cat > /etc/nginx/nginx.conf <<EOL
@@ -12,19 +13,43 @@ events {
 http {
 EOL
 
-# Parse the PROXY variable and create server and upstream blocks
-echo "$PROXY" | awk '
-/^- listen:/ { listen_port = $2 }
-/^  upstream:/ { upstream_host_port = substr($0, index($0, ":") + 1) }
-END {
-    split(upstream_host_port, arr, ":")
-    upstream_host = arr[1]
-    upstream_port = arr[2]
+# Parse and create upstream and server blocks for port 9000
+IFS=',' read -ra UPSTREAMS_9000 <<< "$LISTEN_9000_UPSTREAMS"
+for upstream in "${UPSTREAMS_9000[@]}"; do
+    IFS=':' read upstream_host upstream_port <<< "$upstream"
+    echo "    upstream upstream_${upstream_port} { server ${upstream_host}:${upstream_port}; }" >> /etc/nginx/nginx.conf
+    cat >> /etc/nginx/nginx.conf <<EOL
+    server {
+        listen 9000;
+        location / {
+            proxy_pass http://upstream_${upstream_port};
+            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;
+        }
+    }
+EOL
+done
 
-    print "    upstream upstream_" upstream_port " { server " upstream_host ":" upstream_port "; }" >> "/etc/nginx/nginx.conf"
-    print "    server { listen " listen_port "; location / { proxy_pass http://upstream_" upstream_port "; 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; } }" >> "/etc/nginx/nginx.conf"
-}
-'
+# Parse and create upstream and server blocks for port 9001
+IFS=',' read -ra UPSTREAMS_9001 <<< "$LISTEN_9001_UPSTREAMS"
+for upstream in "${UPSTREAMS_9001[@]}"; do
+    IFS=':' read upstream_host upstream_port <<< "$upstream"
+    echo "    upstream upstream_${upstream_port} { server ${upstream_host}:${upstream_port}; }" >> /etc/nginx/nginx.conf
+    cat >> /etc/nginx/nginx.conf <<EOL
+    server {
+        listen 9001;
+        location / {
+            proxy_pass http://upstream_${upstream_port};
+            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;
+        }
+    }
+EOL
+done
 
 # Close the http block
 echo "}" >> /etc/nginx/nginx.conf