refactor: 🎨 case matching in dockerfile

Containerfile

@@ -1,4 +1,4 @@
-FROM python:3.12 as builder
+FROM python:3.12 AS builder
 
 RUN pip install poetry
 
@@ -14,7 +14,7 @@ RUN touch README.md
 
 RUN --mount=type=cache,target=$POETRY_CACHE_DIR poetry install --without dev --no-root
 
-FROM python:3.12-slim as runtime
+FROM python:3.12-slim AS runtime
 
 RUN pip install poetry