new file: authentication/.env

new file:   authentication/Dockerfile
	new file:   authentication/Makefile
	new file:   authentication/__pycache__/main.cpython-313.pyc
	new file:   authentication/database-migration/Dockerfile
	new file:   authentication/database-migration/data.db
	new file:   authentication/database-migration/db_migration.py
	new file:   authentication/database-migration/migration.py
	new file:   authentication/database-migration/requirements.txt
	new file:   authentication/docker-compose.migration.yml
	new file:   authentication/docker-compose.yml
	new file:   authentication/main.py
	new file:   authentication/requirements.txt

authentication/database-migration/db_migration.py

@@ -0,0 +1,38 @@
+print('RUNNING!')
+
+import sqlite3
+import os
+import psycopg
+
+print(os.getcwd())
+print(os.listdir())
+
+with open('data.db', 'rb') as f:
+    data = f.read()
+    print(f'[DEBUG] Begin SQLite database')
+    print(data)
+    print(f'[DEBUG] End SQLite database')
+
+
+conn = psycopg.connect(
+    host = 'db',
+    port = 5432,
+    dbname = os.getenv('POSTGRES_DB'),
+    user = os.getenv('POSTGRES_USER'),
+    password = os.getenv('POSTGRES_PASSWORD')
+)
+
+cursor = conn.cursor()
+
+with sqlite3.connect('data.db') as sqlite3_conn:
+    sqlite_cursor = sqlite3_conn.cursor()
+    sqlite_cursor.execute('SELECT COUNT(*) FROM data')
+    number_of_users = sqlite_cursor.fetchone()[0]
+    for user in range(1, number_of_users + 1):
+        print(f'Migrating user {user} ...')
+        sqlite_cursor.execute('SELECT (id, email, remail, phone, password) FROM data WHERE id = ?', (user,))
+        cursor.execute('INSERT INTO users (id, email, remail, phone, password) VALUES (%s, %s, %s, %s, %s)', tuple(sqlite_cursor.fetchone()))
+    cursor.execute('SELECT setval(pg_get_serial_sequence(\'users\', \'id\'), (SELECT MAX(id) FROM users), true)')
+    sqlite_cursor.close()
+
+print('[INFO] Migration completed')