RF: Use source activate if possible

manifest-gitlab-ci.yml

@@ -16,8 +16,10 @@ default:
       mkdir ./conda-dir;
       export CONDA_ENVS_DIRS=$(pwd)/conda-dir/;
       export CONDA_PKGS_DIRS=$(pwd)/conda-dir/.pkgs;
+      export CONDABINDIR=$(dirname $(which conda))
       conda create -c conda-forge -p ./env python=3.9;
-      conda activate ./env;
+      if [ -f "$CONDABINDIR"/activate ]; then source $CONDABINDIR/activate ./env;
+      else                                    conda               activate ./env; fi
       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;