/docker-entrypoint-initdb.dにデータベース初期化スクリプトを置いておく（PostgreSQL）


https://qiita.com/torifukukaiou/items/8332fc2bac0778f40d8c

をLTしました。

https://liveviewjp.connpass.com/event/260861/

2022/09/27(火)に行われた、「[LiveView JP#10：LivebookでキャッチーにElixirを楽しもう](https://liveviewjp.connpass.com/event/260861/)」です。

`psql`で愚直にデータベース作成、テーブル作成、データの挿入を行いました。
LT中に、PostgreSQLコンテナ内の`/docker-entrypoint-initdb.d`に初期化ファイルを置いておくと自動的に初期化してくれるということを教えてもらいました。

https://hub.docker.com/_/postgres

公式に記載があります。

![スクリーンショット 2022-09-27 21.32.50.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/131808/e8eb7648-4a54-4db9-e765-24bdc1e995f6.png)

---


```yml:docker-compose.yml
version: '3'

services:
  livebook:
    image: livebook/livebook
    ports:
      - 8080:8080
      - 8081:8081
    depends_on:
      - db

  db:
    image: postgres:13
    ports:
      - 5432:5432
    volumes:
      - ./:/docker-entrypoint-initdb.d
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
```

```sql:initdb.sql
CREATE DATABASE sample;
\c sample;

DROP TABLE IF EXISTS iris;
CREATE TABLE iris(
  sepal_l FLOAT,
  sepal_w FLOAT,
  petal_l FLOAT,
  petal_w FLOAT,
  class   VARCHAR(20)
);

insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.1,3.5,1.4,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.9,3.0,1.4,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.7,3.2,1.3,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.6,3.1,1.5,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,3.6,1.4,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.4,3.9,1.7,0.4,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.6,3.4,1.4,0.3,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,3.4,1.5,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.4,2.9,1.4,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.9,3.1,1.5,0.1,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.4,3.7,1.5,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.8,3.4,1.6,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.8,3.0,1.4,0.1,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.3,3.0,1.1,0.1,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.8,4.0,1.2,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.7,4.4,1.5,0.4,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.4,3.9,1.3,0.4,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.1,3.5,1.4,0.3,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.7,3.8,1.7,0.3,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.1,3.8,1.5,0.3,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.4,3.4,1.7,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.1,3.7,1.5,0.4,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.6,3.6,1.0,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.1,3.3,1.7,0.5,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.8,3.4,1.9,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,3.0,1.6,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,3.4,1.6,0.4,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.2,3.5,1.5,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.2,3.4,1.4,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.7,3.2,1.6,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.8,3.1,1.6,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.4,3.4,1.5,0.4,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.2,4.1,1.5,0.1,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.5,4.2,1.4,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.9,3.1,1.5,0.1,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,3.2,1.2,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.5,3.5,1.3,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.9,3.1,1.5,0.1,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.4,3.0,1.3,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.1,3.4,1.5,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,3.5,1.3,0.3,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.5,2.3,1.3,0.3,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.4,3.2,1.3,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,3.5,1.6,0.6,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.1,3.8,1.9,0.4,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.8,3.0,1.4,0.3,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.1,3.8,1.6,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.6,3.2,1.4,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.3,3.7,1.5,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,3.3,1.4,0.2,'Iris-setosa');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.0,3.2,4.7,1.4,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.4,3.2,4.5,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.9,3.1,4.9,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.5,2.3,4.0,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.5,2.8,4.6,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.7,2.8,4.5,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.3,3.3,4.7,1.6,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.9,2.4,3.3,1.0,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.6,2.9,4.6,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.2,2.7,3.9,1.4,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,2.0,3.5,1.0,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.9,3.0,4.2,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.0,2.2,4.0,1.0,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.1,2.9,4.7,1.4,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.6,2.9,3.6,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.7,3.1,4.4,1.4,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.6,3.0,4.5,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.8,2.7,4.1,1.0,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.2,2.2,4.5,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.6,2.5,3.9,1.1,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.9,3.2,4.8,1.8,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.1,2.8,4.0,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.3,2.5,4.9,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.1,2.8,4.7,1.2,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.4,2.9,4.3,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.6,3.0,4.4,1.4,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.8,2.8,4.8,1.4,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.7,3.0,5.0,1.7,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.0,2.9,4.5,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.7,2.6,3.5,1.0,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.5,2.4,3.8,1.1,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.5,2.4,3.7,1.0,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.8,2.7,3.9,1.2,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.0,2.7,5.1,1.6,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.4,3.0,4.5,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.0,3.4,4.5,1.6,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.7,3.1,4.7,1.5,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.3,2.3,4.4,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.6,3.0,4.1,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.5,2.5,4.0,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.5,2.6,4.4,1.2,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.1,3.0,4.6,1.4,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.8,2.6,4.0,1.2,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.0,2.3,3.3,1.0,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.6,2.7,4.2,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.7,3.0,4.2,1.2,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.7,2.9,4.2,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.2,2.9,4.3,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.1,2.5,3.0,1.1,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.7,2.8,4.1,1.3,'Iris-versicolor');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.3,3.3,6.0,2.5,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.8,2.7,5.1,1.9,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.1,3.0,5.9,2.1,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.3,2.9,5.6,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.5,3.0,5.8,2.2,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.6,3.0,6.6,2.1,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (4.9,2.5,4.5,1.7,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.3,2.9,6.3,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.7,2.5,5.8,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.2,3.6,6.1,2.5,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.5,3.2,5.1,2.0,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.4,2.7,5.3,1.9,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.8,3.0,5.5,2.1,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.7,2.5,5.0,2.0,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.8,2.8,5.1,2.4,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.4,3.2,5.3,2.3,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.5,3.0,5.5,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.7,3.8,6.7,2.2,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.7,2.6,6.9,2.3,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.0,2.2,5.0,1.5,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.9,3.2,5.7,2.3,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.6,2.8,4.9,2.0,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.7,2.8,6.7,2.0,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.3,2.7,4.9,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.7,3.3,5.7,2.1,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.2,3.2,6.0,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.2,2.8,4.8,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.1,3.0,4.9,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.4,2.8,5.6,2.1,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.2,3.0,5.8,1.6,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.4,2.8,6.1,1.9,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.9,3.8,6.4,2.0,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.4,2.8,5.6,2.2,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.3,2.8,5.1,1.5,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.1,2.6,5.6,1.4,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (7.7,3.0,6.1,2.3,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.3,3.4,5.6,2.4,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.4,3.1,5.5,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.0,3.0,4.8,1.8,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.9,3.1,5.4,2.1,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.7,3.1,5.6,2.4,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.9,3.1,5.1,2.3,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.8,2.7,5.1,1.9,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.8,3.2,5.9,2.3,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.7,3.3,5.7,2.5,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.7,3.0,5.2,2.3,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.3,2.5,5.0,1.9,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.5,3.0,5.2,2.0,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (6.2,3.4,5.4,2.3,'Iris-virginica');
insert into iris(sepal_l, sepal_w, petal_l, petal_w, class) values (5.9,3.0,5.1,1.8,'Iris-virginica');
```

`docker-compose.yml`と`initdb.sql`を置いたフォルダにて
`docker-compose up`です :rocket::rocket::rocket: