Complete the switch to proper rocky CI runs using containers.

Author: jonasbardino

.github/workflows/ci.yml

@@ -37,22 +37,6 @@ jobs:
         run: |
           make test
 
-  python3-rocky9ish:
-    runs-on: ubuntu-22.04
-    steps:
-      - name: Check out repository contents
-        uses: actions/checkout@v3
-      - name: Set up Python 3.9.18 to mimic Rocky9
-        uses: actions/setup-python@v3
-        with:
-          python-version: "3.9.18"
-      - name: Setup environment
-        run: |
-          make dependencies
-      - name: Run tests
-        run: |
-          make test
-
   python3-rocky9:
     runs-on: ubuntu-22.04
     container:
@@ -70,22 +54,6 @@ jobs:
         run: |
           make test
 
-  python3-rocky8ish:
-    runs-on: ubuntu-20.04
-    steps:
-      - name: Check out repository contents
-        uses: actions/checkout@v3
-      - name: Set up Python 3.6.8 to mimic Rocky8
-        uses: actions/setup-python@v3
-        with:
-          python-version: "3.6.8"
-      - name: Setup environment
-        run: |
-          make dependencies
-      - name: Run tests
-        run: |
-          make test
-
   python3-rocky8:
     runs-on: ubuntu-20.04
     container: