Merge pull request #1354 from mathbunnyru/asalikhov/strict_python_version

Pin python version in a strict way

Author: mathbunnyru

base-notebook/Dockerfile

@@ -113,7 +113,7 @@ RUN wget --quiet "https://github.com/conda-forge/miniforge/releases/download/${m
     conda config --system --set auto_update_conda false && \
     conda config --system --set show_channel_urls true && \
     if [[ "${PYTHON_VERSION}" != "default" ]]; then conda install --yes python="${PYTHON_VERSION}"; fi && \
-    conda list python | grep '^python ' | tr -s ' ' | cut -d '.' -f 1,2 | sed 's/$/.*/' >> "${CONDA_DIR}/conda-meta/pinned" && \
+    conda list python | grep '^python ' | tr -s ' ' | cut -d ' ' -f 1,2 >> "${CONDA_DIR}/conda-meta/pinned" && \
     conda install --quiet --yes \
     "conda=${CONDA_VERSION}" \
     'pip' && \