feat: add GitHub Actions CI workflow for OCI image builds and automated drift testing

Author: mios-dev

.github/workflows/mios-ci.yml

@@ -103,12 +103,6 @@ jobs:
           sudo apt-get update -qq
           sudo apt-get install -y podman skopeo
 
-      - name: Configure Podman to use VFS storage driver
-        run: |
-          sudo mkdir -p /etc/containers
-          echo -e '[storage]\ndriver = "vfs"\nrunroot = "/run/containers/storage"\ngraphroot = "/var/lib/containers/storage"' | sudo tee /etc/containers/storage.conf
-          sudo rm -rf /var/lib/containers/storage /run/containers/storage
-
       - name: Free disk space on the GHA runner
         # GitHub-hosted ubuntu-24.04 runners ship with ~14 GB free on
         # /. The MiOS Containerfile bakes 16+ container images into
@@ -300,12 +294,6 @@ jobs:
           sudo apt-get update -qq
           sudo apt-get install -y podman
 
-      - name: Configure Podman to use VFS storage driver
-        run: |
-          sudo mkdir -p /etc/containers
-          echo -e '[storage]\ndriver = "vfs"\nrunroot = "/run/containers/storage"\ngraphroot = "/var/lib/containers/storage"' | sudo tee /etc/containers/storage.conf
-          sudo rm -rf /var/lib/containers/storage /run/containers/storage
-
       - name: Free disk space on the GHA runner (smoke job)
         # Same rationale as the main build job -- runner needs ~30 GB
         # extra room for the 16+ bound-image bakes during smoke build.