fix workflow

.github/workflows/python-package-conda.yml

@@ -18,30 +18,30 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: 3.9
-    - name:
+    - name: Prepare environment variable
       run: |
-        # $CONDA is an environment variable pointing to the root of the miniconda directory
-        echo $CONDA/bin >> $GITHUB_PATH
+        echo "CONDA=$HOME/miniconda" >> $GITHUB_ENV
+        echo "$HOME/miniconda/bin" >> $GITHUB_PATH
     - name: Install packages and test with pytest
       run: |
+        source $CONDA/etc/profile.d/conda.sh
         conda config --add channels conda-forge
         conda create -n mlxtend python=3.10 --yes
-        conda init
         conda activate mlxtend
-        conda env update environment.yml
+        conda env update --file environment.yml
         pip install scikit-learn==1.1.3
         pip install pandas==1.3.5
         conda install tensorflow joblib pytest -y -q
         conda install imageio scikit-image -y -q
         conda install dlib -y -q
         pip install markdown
         pip install coverage
-        pip install -e  .
+        pip install -e .
         python -c "import numpy; print('NumPy:', numpy.__version__)"
         python -c "import scipy; print('SciPy:', scipy.__version__)"
         python -c "import sklearn; print('Scikit-learn:', sklearn.__version__)"
         python -c "import pandas; print('Pandas:', pandas.__version__)"
         coverage run --source=mlxtend --branch -m pytest mlxtend
         coverage xml
     - name: Upload Coverage to Codecov
-      uses: codecov/codecov-action@v2
+      uses: codecov/codecov-action@v2