diff --git a/.github/workflows/test_python.yml b/.github/workflows/test_python.yml
index 93b65dcca5..dd8bded91d 100644
--- a/.github/workflows/test_python.yml
+++ b/.github/workflows/test_python.yml
@@ -49,11 +49,9 @@ jobs:
             gcc: 8
             tf:
 
+    container: ghcr.io/deepmodeling/deepmd-kit-test-environment:py${{ matrix.python }}-gcc${{ matrix.gcc }}-tf${{ matrix.tf }}
     steps:
     - uses: actions/checkout@master
-    - uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python }}
     - name: pip cache
       uses: actions/cache@v2
       with:
@@ -62,9 +60,6 @@ jobs:
           ${{ runner.os }}-pip-${{ hashFiles('**/setup.py') }}-${{ hashFiles('**/requirements.txt') }}
         restore-keys: |
           ${{ runner.os }}-pip-
-    - run: |
-        sudo apt update
-        sudo apt install gcc-${{ matrix.gcc }} g++-${{ matrix.gcc }}
     - run: python -m pip install -U pip>=21.3.1
     - run: pip install -e .[cpu,test] codecov
       env:
@@ -72,9 +67,4 @@ jobs:
         CXX: g++-${{ matrix.gcc }}
         TENSORFLOW_VERSION: ${{ matrix.tf }}
     - run: dp --version
-    - name: Prepare parallel runtime
-      if: ${{ matrix.tf == '' }}
-      run: |
-        sudo apt install libopenmpi-dev openmpi-bin
-        HOROVOD_WITHOUT_GLOO=1 HOROVOD_WITH_TENSORFLOW=1 pip install horovod mpi4py
     - run: pytest --cov=deepmd source/tests && codecov
diff --git a/pyproject.toml b/pyproject.toml
index 2e9e3239ab..50fe237581 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools", "setuptools_scm", "wheel", "scikit-build", "cmake", "ninja", "m2r"]
+requires = ["setuptools", "setuptools_scm", "wheel", "scikit-build", "cmake", "ninja"]
 
diff --git a/setup.py b/setup.py
index d46703e463..f843395ed3 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@
 
 # read readme to markdown
 readme_file = Path(__file__).parent / "README.md"
-readme = readme_file.read_text()
+readme = readme_file.read_text(encoding="utf-8")
 
 tf_version = os.environ.get("TENSORFLOW_VERSION", "")