New execenv for python 3.12

.gitignore

@@ -1,3 +1,4 @@
 # IntelliJ IDE
 /*.iml
 /*.idea/
+.DS_Store

co_execenv_python/3.12/Dockerfile

@@ -0,0 +1,69 @@
+FROM openhpi/docker_exec_phusion
+
+LABEL org.opencontainers.image.vendor="AutoPING Team"
+LABEL org.opencontainers.image.authors="daniel.fischer@tu-ilmenau.de"
+LABEL org.opencontainers.image.title="Python 3.12 execution environment for CodeOcean"
+LABEL org.opencontainers.image.description="This image provides a Python 3.12 environment with custom JSON message output and turtle support."
+# LABEL org.opencontainers.image.url="https://github.com/openHPI/dockerfiles"
+
+LABEL run_command="python3 -B /usr/lib/python3.12/webpython.py -f %{filename}"
+LABEL test_command="python3 -B -m unittest --verbose %{module_name}"
+
+# --------------------------------------------------
+# Install Python 3.12
+# --------------------------------------------------
+RUN add-apt-repository -y ppa:deadsnakes/ppa --no-update
+
+RUN install_clean \
+    python3.12 \
+    python3.12-dev \
+    python3.12-venv \
+    python3-pip \
+    python3-tk
+
+# --------------------------------------------------
+# Set Python 3.12 as default
+# --------------------------------------------------
+RUN update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.12 1
+
+RUN update-alternatives --set python3 /usr/bin/python3.12
+
+# --------------------------------------------------
+# Bootstrap pip
+# --------------------------------------------------
+RUN python3.12 -m ensurepip --upgrade || true
+
+# --------------------------------------------------
+# Install Python packages
+# --------------------------------------------------
+RUN python3.12 -m pip install \
+    --break-system-packages \
+    --no-cache-dir \
+    pylint==3.2.5 \
+    bitstring \
+    requests \
+    py-sudoku \
+    matplotlib \
+    numpy \
+    beautifulsoup4 \
+    pandas
+
+# --------------------------------------------------
+# Environment variables
+# --------------------------------------------------
+ENV PYTHONPATH=$PYTHONPATH:/usr/lib/python3.12:/workspace
+ENV PATH=/usr/lib/python3.12:$PATH
+
+# --------------------------------------------------
+# Add custom files
+# --------------------------------------------------
+ADD assess.py /usr/lib/python3.12/assess.py
+
+ADD webpython.py /usr/lib/python3.12/webpython.py
+
+# --------------------------------------------------
+# Replace turtle implementation
+# --------------------------------------------------
+RUN rm -f /usr/lib/python3.12/turtle.py
+
+ADD turtle.py /usr/lib/python3.12/turtle.py