chore(docker): simplify development rules

* when `mix.lock` is changed, rebuild the image
* when any other file is changed, sync and restart the service
  * except for directories that are related to deps/build/test/lsp

docker-compose.yml

@@ -29,23 +29,17 @@ services:
     init: true
     develop:
       watch:
+        - path: ./mix.lock
+          action: rebuild
         - path: ./
           ignore:
             - ./build/
             - ./deps/
-          target: /opt/app
-          action: sync
-        - path: ./config/
+            - ./.elixir_ls/
+            - ./cover/
+            - ./report/
           target: /opt/app
           action: sync+restart
-        - path: ./lib/wabanex/application.ex
-          target: /opt/app
-          action: sync+restart
-        - path: ./mix.exs
-          target: /opt/app
-          action: sync+restart
-        - path: ./mix.lock
-          action: rebuild
     environment:
       DNS_CLUSTER_QUERY: *app_host
       POSTGRES_HOST: *db_host