add ports test

tests/ports/docker-compose.yml

@@ -0,0 +1,18 @@
+version: "3"
+services:
+    web1:
+      image: busybox
+      command: ["/bin/busybox", "httpd", "-f", "-h", "/var/www/html", "-p", "8001"]
+      working_dir: /var/www/html
+      ports:
+      - 8001:8001
+      volumes:
+      - ./test1.txt:/var/www/html/index.txt:ro
+    web2:
+      image: busybox
+      command: ["/bin/busybox", "httpd", "-f", "-h", "/var/www/html", "-p", "8002"]
+      working_dir: /var/www/html
+      ports:
+      - 8002:8002
+      volumes:
+      - ./test2.txt:/var/www/html/index.txt:ro

tests/ports/test1.txt

@@ -0,0 +1 @@
+test1

tests/ports/test2.txt

@@ -0,0 +1 @@
+test2