fix: Generate at most one server directive per container

test/test_multiple-networks.py

@@ -1,15 +1,28 @@
+import re
+
 import pytest
 
+
 def test_unknown_virtual_host(docker_compose, nginxproxy):
     r = nginxproxy.get("http://nginx-proxy/")
     assert r.status_code == 503
 
 def test_forwards_to_web1(docker_compose, nginxproxy):
     r = nginxproxy.get("http://web1.nginx-proxy.local/port")
-    assert r.status_code == 200   
+    assert r.status_code == 200
     assert r.text == "answer from port 81\n"
 
 def test_forwards_to_web2(docker_compose, nginxproxy):
     r = nginxproxy.get("http://web2.nginx-proxy.local/port")
-    assert r.status_code == 200   
-    assert r.text == "answer from port 82\n"
+    assert r.status_code == 200
+    assert r.text == "answer from port 82\n"
+
+def test_multipath(docker_compose, nginxproxy):
+    r = nginxproxy.get("http://web3.nginx-proxy.test/port")
+    assert r.status_code == 200
+    assert r.text == "answer from port 83\n"
+    cfg = nginxproxy.get_conf().decode()
+    lines = cfg.splitlines()
+    web3_server_lines = [l for l in lines
+                         if re.search(r'(?m)^\s*server\s+[^\s]*:83;\s*$', l)]
+    assert len(web3_server_lines) == 1

test/test_multiple-networks.yml

@@ -3,6 +3,8 @@ version: '2'
 networks:
   net1: {}
   net2: {}
+  net3a: {}
+  net3b: {}
 
 services:
   nginx-proxy:
@@ -12,6 +14,8 @@ services:
     networks:
       - net1
       - net2
+      - net3a
+      - net3b
 
   web1:
     image: web
@@ -32,3 +36,14 @@ services:
       VIRTUAL_HOST: web2.nginx-proxy.local
     networks:
       - net2
+
+  web3:
+    image: web
+    expose:
+      - "83"
+    environment:
+      WEB_PORTS: 83
+      VIRTUAL_HOST: web3.nginx-proxy.test
+    networks:
+      - net3a
+      - net3b