fix(ci): Use podman to retrieve kernel

Signed-off-by: RJ Trujillo <eyecantcu@pm.me>

.github/workflows/reusable-build.yml

@@ -51,7 +51,6 @@ jobs:
             kernel_flavor: fsync # kernel-fsync not required for ublue-os F38
           - fedora_version: 40
             kernel_flavor: fsync # kernel-fsync packages are not being built for F40 yet.
-
     steps:
       # Checkout push-to-registry action GitHub repository
       - name: Checkout Push to Registry action
@@ -135,26 +134,28 @@ jobs:
             podman pull ${{ env.FQ_SOURCE_IMAGE }}
 
       - name: Get current version
-        id: labels
-        uses: addnab/docker-run-action@v3
-        with:
-          image: ${{ env.FQ_SOURCE_IMAGE }}
-          shell: bash
-          run: |
-            set -eo pipefail
-            skopeo inspect docker://${{ env.FQ_SOURCE_IMAGE }} > inspect.json
-            ver=$(jq -r '.Labels["org.opencontainers.image.version"]' inspect.json)
-            linux=$(jq -r '.Labels["ostree.linux"]' inspect.json)
-            if [ -z "$ver" ] || [ "null" = "$ver" ]; then
-              echo "inspected image version must not be empty or null"
-              exit 1
-            fi
-            if [ -z "$linux" ] || [ "null" = "$linux" ]; then
-              echo "inspected image linux version must not be empty or null"
-              exit 1
-            fi
-            echo "SOURCE_IMAGE_VERSION=$ver" >> $GITHUB_ENV
-            echo "SOURCE_IMAGE_LINUX=$linux" >> $GITHUB_ENV
+        run: |
+          set -eo pipefail
+
+          # Get kernel version with podman
+          container_name="fq-$(uuidgen)"
+          podman run --entrypoint /bin/bash --name "$container_name" -dt "${{ env.FQ_SOURCE_IMAGE }}"
+          installed_packages=$(podman exec "$container_name" rpm -qa)
+          kernel_suffix="linux"
+          linux=$(echo $installed_packages | grep -P 'kernel-(|'"$kernel_suffix"'-)(\d+\.\d+\.\d+)' | sed -E 's/kernel-(|'"$kernel_suffix"'-)//')
+
+          skopeo inspect docker://${{ env.FQ_SOURCE_IMAGE }} > inspect.json
+          ver=$(jq -r '.Labels["org.opencontainers.image.version"]' inspect.json)
+          if [ -z "$ver" ] || [ "null" = "$ver" ]; then
+            echo "inspected image version must not be empty or null"
+            exit 1
+          fi
+          if [ -z "$linux" ] || [ "null" = "$linux" ]; then
+            echo "inspected image linux version must not be empty or null"
+            exit 1
+          fi
+          echo "SOURCE_IMAGE_VERSION=$ver" >> $GITHUB_ENV
+          echo "SOURCE_IMAGE_LINUX=$linux" >> $GITHUB_ENV
 
       # Build metadata
       - name: Image Metadata