RF: USe conda activate, not source activate

manifest-gitlab-ci.yml

@@ -8,14 +8,18 @@
 # The CI configuration and scripts used to generate
 # and test files are contained in the
 # fsl/conda/manifest-rules  project. All jobs are
-# executed in an environment  in which conda is
-# available.
+# assumed to be executed in an environment in which
+# conda is available.
 default:
   before_script:
-    - conda create -c conda-forge -p ./env python=3.9
-    - source activate ./env
-    - python -m pip install git+https://git.fmrib.ox.ac.uk/fsl/fsl-ci-rules.git
-    - python -m pip install git+https://git.fmrib.ox.ac.uk/fsl/conda/manifest-rules.git
+    - |
+      mkdir ./conda-dir;
+      export CONDA_ENVS_DIRS=$(pwd)/conda-dir/;
+      export CONDA_PKGS_DIRS=$(pwd)/conda-dir/.pkgs;
+      conda create -c conda-forge -p ./env python=3.9;
+      conda activate ./env;
+      python -m pip install git+https://git.fmrib.ox.ac.uk/fsl/fsl-ci-rules.git;
+      python -m pip install git+https://git.fmrib.ox.ac.uk/fsl/conda/manifest-rules.git;
 
 
 # Don't run pipeline on MRs
@@ -262,7 +266,6 @@ test-manifest:macos-64:
   stage: publish
   image: continuumio/miniconda3
   tags:
-    - fsl-ci
     - fslconda-channel-host
   when: manual