Removed additional env 'py3'.

.gitlab-ci.yml

@@ -18,8 +18,7 @@ test_py_tools_ds:
   stage: test
   script:
     - source /root/miniconda3/bin/activate
-    - source activate py3
-    - export GDAL_DATA=/root/miniconda3/envs/py3/share/gdal
+    - export GDAL_DATA=/root/miniconda3/share/gdal
     - export PYTHONPATH=$PYTHONPATH:/root  # /root <- directory needed later
     - make nosetests
     - make docs
@@ -36,8 +35,7 @@ test_styles:
   stage: test
   script:
     - source /root/miniconda3/bin/activate
-    - source activate py3
-    - export GDAL_DATA=/root/miniconda3/envs/py3/share/gdal
+    - export GDAL_DATA=/root/miniconda3/share/gdal
     - export PYTHONPATH=$PYTHONPATH:/root  # /root <- directory needed later
     - make lint
   artifacts:
@@ -52,8 +50,7 @@ test_py_tools_ds_install:
   stage: test
   script:
     - source /root/miniconda3/bin/activate
-    - source activate py3
-    - export GDAL_DATA=/root/miniconda3/envs/py3/share/gdal
+    - export GDAL_DATA=/root/miniconda3/share/gdal
     - conda create -y -q --name py_tools_ds python=3
     - source activate py_tools_ds
      # resolve some requirements with conda

tests/CI_docker/context/conda_pyenv.docker

 FROM centos:7
+# matplotlib requires freetype, freetype-devel, libpng-devel under centos
+# scikit-image requires blas-devel, lapack-devel, atlas-devel under centos
 RUN yum update -y && \
     yum install -y wget vim bzip2 gcc gcc-c++ make libgl1-mesa-glx mesa-libGL qt5-qtbase-gui git nano tree gdb
 
 ENV miniconda_dl 'Miniconda3-latest-Linux-x86_64.sh'
 ENV envconfig 'environment_pinned_v0.1.yml'
-ENV envname 'py3'
 ENV git_lfs_v='2.1.1'
 
 RUN /bin/bash -i -c "cd /root; wget https://repo.continuum.io/miniconda/$miniconda_dl ; \
@@ -16,7 +17,7 @@ COPY *.yml /root/
 
 # create an environment with all packages specified in $envconfig
 RUN /bin/bash -i -c "source /root/miniconda3/bin/activate ; \
-    conda env create -n $envname -f /root/$envconfig"
+    conda env update -f /root/$envconfig"
 
 # install git lfs
 RUN /bin/bash -i -c "curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.rpm.sh | bash"