Add buildah to install packages as was not included

.github/workflows/build.yml

@@ -42,6 +42,7 @@ jobs:
           echo "IMAGE_REGISTRY=${IMAGE_REGISTRY,,}" >> ${GITHUB_ENV}
           echo "IMAGE_NAME=${IMAGE_NAME,,}" >> ${GITHUB_ENV}
 
+      # Get Ubuntu version and setup podman taken from bluebuild and modified to work here
       - name: Get Ubuntu version
         id: ubuntu_version
         shell: bash
@@ -50,8 +51,7 @@ jobs:
           echo "Ubuntu version is $VERSION"
           echo "version=$VERSION" >> "$GITHUB_OUTPUT"
 
-      # that is compatible with BlueBuild
-      - name: Setup Podman
+      - name: Setup Podman and buildah
         shell: bash
         env:
           UBUNTU_VERSION: ${{ steps.ubuntu_version.outputs.version }}
@@ -63,7 +63,7 @@ jobs:
           echo "deb ${sources_url}/ /" | sudo tee /etc/apt/sources.list.d/devel-kubic-libcontainers-unstable.list
           curl -fsSL "${key_url}" | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/devel_kubic_libcontainers_unstable.gpg > /dev/null
           sudo apt-get update
-          sudo apt-get install -y podman
+          sudo apt-get install -y podman buildah
 
       # These stage versions are pinned by https://github.com/renovatebot/renovate
       - name: Checkout