Finish MVP and dockerize

apps/backend/fastapi/app/models/mixins.py

@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+from datetime import datetime
+from uuid import uuid4
+
+from sqlalchemy import DateTime
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import Mapped, mapped_column
+
+
+class IdentifierMixin:
+    id: Mapped[str] = mapped_column(
+        UUID(as_uuid=False), primary_key=True, default=lambda: str(uuid4())
+    )
+
+
+class TimestampMixin:
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=datetime.utcnow
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=datetime.utcnow, onupdate=datetime.utcnow
+    )