Update base-notebook/Dockerfile

Co-authored-by: Erik Sundell <[email protected]>

Author: mathbunnyru

base-notebook/Dockerfile

@@ -112,7 +112,7 @@ RUN wget --quiet "https://github.com/conda-forge/miniforge/releases/download/${m
     echo "conda ${CONDA_VERSION}" >> "${CONDA_DIR}/conda-meta/pinned" && \
     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 && \
+    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 install --quiet --yes \
     "conda=${CONDA_VERSION}" \