Update dockerfile

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.8.3-alpine3.11 as base
+FROM python:3.12-alpine as base
 ENV PYTHONFAULTHANDLER=1 \
     PYTHONHASHSEED=random \
     PYTHONUNBUFFERED=1 
@@ -9,11 +9,13 @@ FROM base as builder
 ENV PIP_DEFAULT_TIMEOUT=100 \
     PIP_DISABLE_PIP_VERSION_CHECK=1 \
     PIP_NO_CACHE_DIR=1 \
-    POETRY_VERSION=1.0.5
+    POETRY_VERSION=1.7.1
 
-RUN apk add --no-cache gcc libffi-dev musl-dev postgresql-dev
-RUN pip install "poetry==$POETRY_VERSION"
-RUN python -m venv /venv
+RUN apk update && apk upgrade && \
+    apk add --no-cache gcc libffi-dev musl-dev postgresql-dev && \
+    python -m pip install --upgrade pip && \
+    pip install "poetry==$POETRY_VERSION" && \
+    python -m venv /venv
 
 COPY pyproject.toml poetry.lock ./
 RUN poetry export -f requirements.txt | /venv/bin/pip install -r /dev/stdin
@@ -22,9 +24,9 @@ COPY . .
 RUN poetry build && /venv/bin/pip install dist/*.whl
 
 FROM base as final
-LABEL mainteiner="Maxim Krivich <maxkrivich@gmail.com>"
 ENV PATH="/venv/bin:$PATH"
-RUN apk add --no-cache libffi libpq
+RUN apk update && apk upgrade \
+    && apk add --no-cache libffi libpq
 COPY --from=builder /venv /venv
 ENTRYPOINT [ "slowloris" ]
-CMD ["-h"]
+CMD ["-h"]