Finish changing things to use port 3100 for dev.

Author: plural

docker-compose.override.init.yml

@@ -1,10 +1,13 @@
 services:
 
   nrdb_api_server:
+    ports:
+      - "3100:3100"
+
     command:
       - /bin/sh
       - -c
       - |
         bundle exec rake db:reset
         bundle exec rails cards:import
-        bundle exec rails server -b 0.0.0.0
+        bundle exec rails server -b 0.0.0.0 -p 3100

docker-compose.yml

@@ -15,9 +15,6 @@ services:
     # build the Dockerfile next to this file, tag the built image with above image name
     build: .
 
-    ports:
-      - "3000:3000"
-
     networks:
       - backend
       - null_signal