Add structure sql (#114)

* add structure.sql

* remove comma

docker-compose.yml

@@ -5,7 +5,7 @@ version: '3'
 services:
 
   db:
-    image: postgres:11.1
+    image: postgres:9.6
     volumes:
       - pgdata:/var/lib/postgresql/data
 

make-services-app.mk

@@ -27,8 +27,7 @@ app-db-drop:
 	docker-compose run app mix ecto.drop
 
 app-db-prepare:
-	docker-compose run app mix ecto.create
-	docker-compose run app mix ecto.migrate
+	docker-compose run app mix ecto.setup
 
 app-exercises-load-python:
 	docker pull hexletbasics/exercises-python

services/app/Dockerfile

@@ -7,6 +7,7 @@ RUN curl -sL https://deb.nodesource.com/setup_12.x | bash -
 
 RUN apt-get update && apt-get install -y inotify-tools
 RUN apt-get update && apt-get install -y nodejs
+RUN apt-get update && apt-get install -yqq postgresql-client
 RUN npm install -g npm-check-updates env-cmd
 
 # Install hex (Elixir package manager)

services/app/docker-compose.test.yml

@@ -4,7 +4,7 @@ version: '2'
 
 services:
   db:
-    image: postgres:11.1
+    image: postgres:9.6
   test:
     image: app
     command: mix test

services/app/mix.exs

@@ -90,9 +90,11 @@ defmodule HexletBasics.Mixfile do
   # See the documentation for `Mix` for more info on aliases.
   defp aliases do
     [
-      "ecto.setup": ["ecto.create", "ecto.migrate", "run priv/repo/seeds.exs"],
+      "ecto.setup": ["ecto.create", "ecto.load --skip-if-loaded", "run priv/repo/seeds.exs"],
       "ecto.reset": ["ecto.drop", "ecto.setup"],
-      test: ["ecto.create --quiet", "ecto.migrate", "test"],
+      "db.migrate": ["ecto.migrate", "ecto.dump"],
+      "db.rollback": ["ecto.rollback", "ecto.dump"],
+      test: ["ecto.setup", "test"],
       # compile: ["compile --warnings-as-errors"]
     ]
   end