fix(*): Fix Hadolint findings

- Update debian to bookworm
- pip without cache
- apt without recommends
- fixed version (can be updated by dependabot)

examples/flower-via-docker-compose/Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Python runtime as a parent image
-FROM python:3.10-slim-buster
+FROM python:3.10-slim-bookworm
 
 # Set the working directory in the container to /app
 WORKDIR /app
@@ -8,12 +8,12 @@ WORKDIR /app
 COPY ./requirements.txt /app/requirements.txt
 
 # Install gcc and other dependencies
-RUN apt-get update && apt-get install -y \
-    gcc \
-    python3-dev && \
-    rm -rf /var/lib/apt/lists/*
+RUN apt-get update \
+    && apt-get install --no-install-recommends -y \
+    gcc=4:8.3.0-1 \
+    python3-dev=3.7.3-1 \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
 
 # Install any needed packages specified in requirements.txt
-RUN pip install -r requirements.txt
-
-
+RUN pip install --no-cache-dir -r requirements.txt

examples/flower-via-docker-compose/requirements.txt

@@ -1,5 +1,5 @@
 flwr==1.7.0
 tensorflow==2.13.1
 numpy==1.24.3
-prometheus_client == 0.19.0
-flwr_datasets[vision] == 0.0.2
+prometheus_client==0.19.0
+flwr_datasets[vision]==0.0.2