#76 Switch to runner user in portability workflow

.github/workflows/image-tests.yml

@@ -23,7 +23,7 @@ jobs:
       image: "chaste/runner:${{ github.event.inputs.image_tag }}"
       env:
         RUNNER_OFF: 1
-      options: --user 0
+      options: --user runner
 
     defaults:
       run:
@@ -33,14 +33,11 @@ jobs:
     steps:
       - name: Checkout Chaste/${{ github.event.inputs.chaste_branch }}
         run: |
-          su - runner
           git clone --branch ${{ github.event.inputs.chaste_branch }} https://github.com/Chaste/Chaste
           mkdir -p Chaste/build
 
       - name: Create build env init script
         run: |
-          su - runner
-
           cat > init_build_env.sh << 'EOF'
           module use /home/runner/modules/modulefiles
           module load boost petsc_hdf5 sundials vtk xercesc xsd
@@ -51,37 +48,31 @@ jobs:
 
       - name: Configure
         run: |
-          su - runner
           source init_build_env.sh
           cmake -DCMAKE_BUILD_TYPE=Release ..
 
       - name: TestChasteBuildInfo
         run: |
-          su - runner
           source init_build_env.sh
           cmake --build . --target TestChasteBuildInfo --parallel $(nproc)
           ctest -V -R TestChasteBuildInfo --output-on-failure
 
       - name: Build Continuous test pack
         run: |
-          su - runner
           source init_build_env.sh
           cmake --build . --target Continuous --parallel $(nproc)
 
       - name: Build Nightly test pack
         run: |
-          su - runner
           source init_build_env.sh
           cmake --build . --target Nightly --parallel $(nproc)
 
       - name: Run Continuous test pack
         run: |
-          su - runner
           source init_build_env.sh
           ctest -j $(nproc) -L Continuous --output-on-failure
 
       - name: Run Nightly test pack
         run: |
-          su - runner
           source init_build_env.sh
           ctest -j $(nproc) -L Nightly --output-on-failure