Initial commit: Add EAMCO Service API

- Add FastAPI service for managing oil delivery services
- Implement service scheduling and management endpoints
- Add customer service history tracking
- Include database models for services, customers, and auto-delivery
- Add authentication and authorization middleware
- Configure Docker support for local, dev, and prod environments
- Add comprehensive .gitignore for Python projects

database.py

@@ -0,0 +1,42 @@
+from sqlalchemy import create_engine
+from sqlalchemy.engine import URL
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy.orm import declarative_base
+
+from config import load_config
+
+
+ApplicationConfig = load_config()
+
+url = URL.create(
+    drivername="postgresql",
+    username=ApplicationConfig.POSTGRES_USERNAME,
+    password=ApplicationConfig.POSTGRES_PW,
+    host=ApplicationConfig.POSTGRES_SERVER,
+    database=ApplicationConfig.POSTGRES_DBNAME,
+    port=ApplicationConfig.POSTGRES_PORT
+)
+
+engine = create_engine(
+    url,
+    pool_pre_ping=True,
+    pool_size=5,
+    max_overflow=10,
+    pool_recycle=3600,
+)
+
+Session = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+# Keep the global session for backwards compatibility
+session = Session()
+
+Base = declarative_base()
+Base.metadata.create_all(engine)
+
+
+def get_db():
+    db = Session()
+    try:
+        yield db
+    finally:
+        db.close()