Add support for defining dnf package groups to install

.github/workflows/build-gnome.yml

@@ -19,6 +19,17 @@ env:
   IMAGE_REGISTRY: "ghcr.io/${{ github.repository_owner }}"  # do not edit
 
 jobs:
+  get_pkg_lists:
+    name: Retrieve group package lists from fedora:latest dnf group list
+    runs-on: ubuntu-latest
+    container: fedora:latest
+    outputs:
+      GROUP_PKGS: ${{ steps.get_pkg_list.outputs.result }}
+    steps:
+      - id: get_pkg_list
+        run: |
+          echo result=$((dnf group info "C Development Tools and Libraries" && dnf group info "Development Tools") | grep -v : | tr -d '\n' | tr -s '  ' | cut -c2-) > "$GITHUB_OUTPUT"
+  
   build_push:
     name: Build and push image
     runs-on: ubuntu-24.04
@@ -108,6 +119,8 @@ jobs:
           # Postfix image name with -custom to make it a little more descriptive
           # Syntax: https://docs.github.com/en/actions/learn-github-actions/expressions#format
           image: ${{ env.MY_IMAGE_NAME }}
+          build-args: |
+            GROUP_PKGS=${{ env.GROUP_PKGS }}
           tags: |
             ${{ steps.generate-tags.outputs.alias_tags }}
           labels: ${{ steps.meta.outputs.labels }}

Containerfile

@@ -50,6 +50,8 @@ FROM ghcr.io/ublue-os/${SOURCE_IMAGE}${SOURCE_SUFFIX}:${FEDORA_VERSION}
 
 COPY build.sh /tmp/build.sh
 
+ARG GROUP_PKGS
+
 RUN mkdir -p /var/lib/alternatives && \
     /tmp/build.sh && \
     ostree container commit

build.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
-set -ouex pipefail
+set -oex pipefail
+set +u
 
 RELEASE="$(rpm -E %fedora)"
 
@@ -36,9 +37,12 @@ rpm-ostree install \
         alsa-tools \
         libappstream-glib \
         htop \
-        glances \
-        task
+        glances
 
+# from dnf groups (specify in build.yml)
+if [ -n "$GROUP_PKGS"]; then
+    rpm-ostree install $GROUP_PKGS
+fi
 
 # from rpmfusion
 rpm-ostree install vlc