postgres service for external use

init/01-init.sql

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+-- PostgreSQL Initialization Script
+-- This script will be executed when the PostgreSQL container is first created
+
+-- Create extensions
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+CREATE EXTENSION IF NOT EXISTS "pg_stat_statements";
+CREATE EXTENSION IF NOT EXISTS "pgcrypto";
+
+-- Create roles
+CREATE ROLE readonly;
+GRANT CONNECT ON DATABASE postgres TO readonly;
+GRANT USAGE ON SCHEMA public TO readonly;
+GRANT SELECT ON ALL TABLES IN SCHEMA public TO readonly;
+ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO readonly;
+
+CREATE ROLE readwrite;
+GRANT CONNECT ON DATABASE postgres TO readwrite;
+GRANT USAGE, CREATE ON SCHEMA public TO readwrite;
+GRANT SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA public TO readwrite;
+ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT, INSERT, UPDATE, DELETE ON TABLES TO readwrite;
+GRANT USAGE ON ALL SEQUENCES IN SCHEMA public TO readwrite;
+ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT USAGE ON SEQUENCES TO readwrite;
+
+-- Create sample users
+CREATE USER sample_readonly WITH PASSWORD 'readonly_password';
+GRANT readonly TO sample_readonly;
+
+CREATE USER sample_readwrite WITH PASSWORD 'readwrite_password';
+GRANT readwrite TO sample_readwrite;
+
+-- Create sample schema and tables
+CREATE SCHEMA IF NOT EXISTS sample;
+
+CREATE TABLE IF NOT EXISTS sample.users (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    username VARCHAR(50) NOT NULL UNIQUE,
+    email VARCHAR(100) NOT NULL UNIQUE,
+    password_hash VARCHAR(100) NOT NULL,
+    first_name VARCHAR(50),
+    last_name VARCHAR(50),
+    is_active BOOLEAN DEFAULT TRUE,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS sample.posts (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    user_id UUID NOT NULL REFERENCES sample.users(id) ON DELETE CASCADE,
+    title VARCHAR(200) NOT NULL,
+    content TEXT,
+    is_published BOOLEAN DEFAULT FALSE,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_users_username ON sample.users(username);
+CREATE INDEX IF NOT EXISTS idx_users_email ON sample.users(email);
+CREATE INDEX IF NOT EXISTS idx_posts_user_id ON sample.posts(user_id);
+CREATE INDEX IF NOT EXISTS idx_posts_created_at ON sample.posts(created_at);
+
+-- Insert sample data
+INSERT INTO sample.users (username, email, password_hash, first_name, last_name)
+VALUES 
+    ('johndoe', 'john.doe@example.com', crypt('password123', gen_salt('bf')), 'John', 'Doe'),
+    ('janedoe', 'jane.doe@example.com', crypt('password123', gen_salt('bf')), 'Jane', 'Doe')
+ON CONFLICT (username) DO NOTHING;
+
+-- Get user IDs for sample posts
+DO $$
+DECLARE
+    john_id UUID;
+    jane_id UUID;
+BEGIN
+    SELECT id INTO john_id FROM sample.users WHERE username = 'johndoe';
+    SELECT id INTO jane_id FROM sample.users WHERE username = 'janedoe';
+    
+    INSERT INTO sample.posts (user_id, title, content, is_published)
+    VALUES 
+        (john_id, 'First Post', 'This is my first post content.', TRUE),
+        (john_id, 'Second Post', 'This is my second post content.', FALSE),
+        (jane_id, 'Hello World', 'Hello world post content.', TRUE)
+    ON CONFLICT DO NOTHING;
+END $$;