Always run installation CI in fresh docker image

.github/workflows/install.yml

@@ -37,67 +37,57 @@ jobs:
         include:
           # Ubuntu Installations
           - name: ubuntu-20.04
-            os: ubuntu-20.04
-            container: null
+            container: ubuntu:20.04
+            imageFamily: debian
             regressionFail: true
           - name: ubuntu-22.04
-            os: ubuntu-22.04
-            container: null
+            container: ubuntu:22.04
+            imageFamily: debian
           - name: ubuntu-24.04
-            os: ubuntu-24.04
-            container: null
+            container: ubuntu:24.04
+            imageFamily: debian
           # Debian Installations
           - name: debian-12
-            os: ubuntu-latest
             image: debian:12
             imageFamily: debian
           - name: debian-11
-            os: ubuntu-latest
             image: debian:11
             imageFamily: debian
           # Red Hat Installations
           - name: rocky-8
-            os: ubuntu-latest
             image: rockylinux:8
             imageFamily: redhat
             regressionFail: true
           - name: rocky-9
-            os: ubuntu-latest
             image: rockylinux:9
             imageFamily: redhat
           - name: almalinux-8
-            os: ubuntu-latest
             image: almalinux:8
             imageFamily: redhat
             regressionFail: true
           - name: almalinux-9
-            os: ubuntu-latest
             image: almalinux:9
             imageFamily: redhat
           # SUSE Installations
           - name: opensuse-15.6
-            os: ubuntu-latest
             image: opensuse/leap:15.6
             imageFamily: suse
           # User level installation
           - name: user-install
-            os: ubuntu-latest
             image: null
             user: true
           # Custom location installation
           - name: custom-install
-            os: ubuntu-latest
             image: null
             riscv_path: /home/riscv
           # Custom location user level installation
           - name: custom-user-install
-            os: ubuntu-latest
             image: null
             user: true
             riscv_path: $HOME/riscv-toolchain
 
     # run on selected version of ubuntu or on ubuntu-latest with docker image
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     container:
       image: ${{ matrix.image }}
       options: --privileged --mount type=bind,source=/,target=/host --pid=host --entrypoint /bin/bash # Allow for connection with host