change vars; activate conda if possible. Change cache dirs

.gitlab-ci.yml

 variables:
-  CONDA_ENVS: ".conda_envs"
-  PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
+  CLI_CONDA_ENV: "$CI_PROJECT_DIR/.conda_envs/cli.env"
+  PIP_CACHE_DIR: "$CI_PROJECT_DIR/.pip"
 
 default:
   image: continuumio/anaconda3
 
 cache:
   paths:
-    - ".cache/pip"
-    - "$CONDA_ENVS"
+    - "$PIP_CACHE_DIR"
+    - "$CLI_CONDA_ENV"
 
 stages:
   - setup
@@ -20,7 +20,7 @@ install:
   script:
     - python3 -m pip install pycodestyle
     - if [[ -f requirements.txt ]]; then python3 -m pip install -r requirements.txt; python3 -m pip install -e .; fi
-    - if [[ -f environment.yml ]]; then mkdir $CONDA_ENVS; conda create -f environment.yml -p $CONDA_ENVS; fi
+    - if [[ -f environment.yml ]]; then mkdir $CONDA_ENVS; conda create -f environment.yml -p $CLI_CONDA_ENV; fi
 
 test-code:
   stage: test
@@ -28,4 +28,5 @@ test-code:
   script:
     - python3 -m pycodestyle --filename=*.py diva_evaluation_cli/bin/ test/
     - python3 -m unittest discover -s test/
+    - if [[ -f environment.yml ]]; then conda activate $CONDA_ENVS/cli.env; fi
     - actev -h