add non-working yml file with service/stack description

tmp/docker-compose.yml

@@ -0,0 +1,48 @@
+# this is a (failed) attempt at starting three containers with static IP
+# addresses in an internal network
+#
+version: "3"
+services:
+  stp:
+    image: osmo-stp-master
+    deploy:
+      mode: global
+      restart_policy:
+        condition: none
+    networks:
+      sigtran:
+        ipv4_address: 172.18.0.200
+
+  m3ua:
+    image: m3ua-test
+    deploy:
+      mode: global
+      restart_policy:
+        condition: none
+    depends_on:
+      - stp
+    networks:
+      sigtran:
+        ipv4_address: 172.18.0.2
+
+  sua:
+    image: sua-test
+    deploy:
+      mode: global
+      restart_policy:
+        condition: none
+    depends_on:
+      - stp
+    networks:
+      sigtran:
+        ipv4_address: 172.18.0.3
+
+networks:
+  sigtran:
+    # this apparently was working in the past, but only overlay is
+    # supported now?
+    driver: bridge
+    ipam:
+      driver: default
+      config:
+        - subnet: 172.18.0.0/16