chore: Postgres 연결 테스트용 docker-compose 추가 및 .env.template 수정

.env.example

@@ -124,13 +124,13 @@ CLICKHOUSE_DATABASE=default
 # ORACLE_DATABASE=_
 # ORACLE_SERVICE_NAME=_
 
-# postgres
-# DB_TYPE=postgres
-# POSTGRES_HOST=_
-# POSTGRES_PORT=5432
-# POSTGRES_USER=_
-# POSTGRES_PASSWORD=_
-# POSTGRES_DATABASE=_
+# postgresql
+# DB_TYPE=postgresql
+# POSTGRESQL_HOST=_
+# POSTGRESQL_PORT=5432
+# POSTGRESQL_USER=_
+# POSTGRESQL_PASSWORD=_
+# POSTGRESQL_DATABASE=_
 
 # snowflake
 # DB_TYPE=snowflake

docker/docker-compose-postgres.yml

@@ -0,0 +1,23 @@
+# docker compose -f docker-compose-postgres.yml up
+# docker compose -f docker-compose-postgres.yml down
+
+services:
+  postgres:
+    image: postgres:15
+    hostname: postgres
+    container_name: postgres
+    restart: always
+    ports:
+      - "5432:5432"
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: postgres
+      TZ: Asia/Seoul
+      LANG: en_US.utf8
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./postgres/init:/docker-entrypoint-initdb.d
+
+volumes:
+  postgres_data:

docker/postgres/init/001_create_database.sql

@@ -0,0 +1,2 @@
+CREATE DATABASE lang2sql;
+CREATE DATABASE test;

docker/postgres/init/002_create_user_and_grant.sql

@@ -0,0 +1,5 @@
+CREATE USER lang2sql WITH PASSWORD 'lang2sqlpassword';
+GRANT ALL PRIVILEGES ON DATABASE lang2sql TO lang2sql;
+
+CREATE USER test WITH PASSWORD 'testpassword';
+GRANT ALL PRIVILEGES ON DATABASE test TO test;