convert CI to a matrix job, run complete CI on macos and ubuntu

.github/workflows/CI.yml

@@ -50,55 +50,14 @@ env:
 
 
 jobs:
-  build-osx:
-    runs-on: macos-latest
-    # skip scheduled runs from forks
-    if: ${{ !( github.repository != 'ReactionMechanismGenerator/RMG-Py' && github.event_name == 'schedule' ) }}
-    defaults:
-      run:
-        shell: bash -l {0}
-    steps:
-      - name: Checkout RMG-Py
-        uses: actions/checkout@v4
-
-      # configures the mamba environment manager and builds the environment
-      - name: Setup Mambaforge Python 3.7
-        uses: conda-incubator/setup-miniconda@v2
-        with:
-          environment-file: environment.yml
-          miniforge-variant: Mambaforge
-          miniforge-version: latest
-          python-version: 3.7
-          activate-environment: rmg_env
-          use-mamba: true
-
-      # list the environment for debugging purposes
-      - name: mamba info
-        run: |
-          mamba info
-          mamba list
-
-      # Clone RMG-database
-      - name: Clone RMG-database
-        run: |
-          cd ..
-          git clone -b $RMG_DATABASE_BRANCH https://github.com/ReactionMechanismGenerator/RMG-database.git
-
-      # modify env variables as directed in the RMG installation instructions
-      - name: Set Environment Variables
-        run: |
-          RUNNER_CWD=$(pwd)
-          echo "PYTHONPATH=$RUNNER_CWD/RMG-Py:$PYTHONPATH" >> $GITHUB_ENV
-          echo "$RUNNER_CWD/RMG-Py" >> $GITHUB_PATH
-
-      # RMG build step
-      - name: make RMG
-        run: |
-          make clean
-          make
-
-  build-and-test-linux:
-    runs-on: ubuntu-latest
+  build-and-test:
+    continue-on-error: true
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on:  ${{ matrix.os }}
+    name: ${{ matrix.os }} Build and Test
     # skip scheduled runs from forks
     if: ${{ !( github.repository != 'ReactionMechanismGenerator/RMG-Py' && github.event_name == 'schedule' ) }}
     env: