Ensure using local source when building from source

.gitlab-ci.yml

@@ -224,7 +224,8 @@ manylinux2014_ppc64le_test_cp39:
   dependencies:
     - source
   script:
-    - ${PYTHON} -m pip install --pre --find-links artifacts/ --no-binary hdf5plugin hdf5plugin
+    - ${PYTHON} -m pip install --pre --no-binary numpy,h5py numpy h5py
+    - ${PYTHON} -m pip install --pre --no-index --find-links artifacts/ --no-binary hdf5plugin hdf5plugin
     - ${PYTHON} -m hdf5plugin.test
 
 manylinux2010_test_sdist_cp38:
@@ -241,7 +242,8 @@ windows_test_sdist_python38:
     - source
   script:
     - call "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Auxiliary\\Build\\vcvarsall.bat" amd64 -vcvars_ver=14.16
-    - pip install --pre --find-links artifacts/ --no-binary hdf5plugin hdf5plugin
+    - pip install --pre --only-binary numpy,h5py numpy h5py
+    - pip install --pre --no-index --find-links artifacts/ --no-binary hdf5plugin hdf5plugin
     - python -m hdf5plugin.test
   extends: .windows_base_python38