Update python Docker tag

examples/pytorch/cpu-demo/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.8
+FROM python:3.12
 
 RUN pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu
 

examples/pytorch/elastic/echo/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.8-buster
+FROM python:3.11-buster
 WORKDIR /workspace
 RUN pip install torch==1.13.1 numpy
 # TODO Replace this with the PIP version when available

examples/tensorflow/distribution_strategy/keras-API/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.9
+FROM python:3.12
 
 RUN pip install tensorflow==2.11.0 tensorflow_datasets==4.7.0
 

examples/xgboost/lightgbm-dist/Dockerfile

@@ -30,7 +30,7 @@ RUN git clone \
     cd "${HOME}" && \
     rm -rf LightGBM
 
-FROM python:3.7
+FROM python:3.12
 
 COPY requirements.txt .
 RUN pip install -r requirements.txt

examples/xgboost/smoke-dist/Dockerfile

@@ -1,5 +1,5 @@
 # Install python 3.6
-FROM python:3.6
+FROM python:3.12
 
 RUN mkdir -p /opt/mlkube
 

examples/xgboost/xgboost-dist/Dockerfile

@@ -1,5 +1,5 @@
 # Install python 3.6.
-FROM python:3.6
+FROM python:3.12
 
 RUN mkdir -p /opt/mlkube
 

sdk/python/Dockerfile.conformance

@@ -13,7 +13,7 @@
 # limitations under the License.
 
 # Dockerfile for building the source code of conformance tests
-FROM python:3.10-alpine
+FROM python:3.12-alpine
 
 WORKDIR /kubeflow/training-operator/sdk/python
 

sdk/python/kubeflow/storage_initializer/Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Python runtime as a parent image
-FROM python:3.11
+FROM python:3.12
 
 # Set the working directory in the container
 WORKDIR /app