do install from outside of singularity image

Author: pdziekan

action.yml

@@ -47,7 +47,12 @@ runs:
 #    shell: bash
 #    run: VERBOSE=1 singularity exec $SI cmake --install ${{inputs.path}}/build --config ${{inputs.build_type}}
 
-  - name: configure, build and install libmpdata++
+  - name: configure and build libmpdata++
     working-directory: ${{inputs.path}}
     shell: bash
-    run: VERBOSE=1 singularity exec $SI bash -c "cmake -B ${{inputs.path}}/build -DCMAKE_BUILD_TYPE=${{inputs.build_type}} -DCMAKE_INSTALL_PREFIX=${{inputs.install_prefix}} -DCMAKE_CXX_COMPILER=${{inputs.cxx}};cmake --build ${{inputs.path}}/build --config ${{inputs.build_type}} -j${{inputs.threads}};sudo cmake --install ${{inputs.path}}/build --config ${{inputs.build_type}}"
+    run: VERBOSE=1 singularity exec $SI bash -c "cmake -B ${{inputs.path}}/build -DCMAKE_BUILD_TYPE=${{inputs.build_type}} -DCMAKE_INSTALL_PREFIX=${{inputs.install_prefix}} -DCMAKE_CXX_COMPILER=${{inputs.cxx}};cmake --build ${{inputs.path}}/build --config ${{inputs.build_type}} -j${{inputs.threads}}"
+
+  - name: install libmpdata++
+    working-directory: ${{inputs.path}}
+    shell: bash
+    run: sudo cmake --install ${{inputs.path}}/build --config ${{inputs.build_type}}