Add variant support

Author: alexiri

Dockerfile

@@ -10,6 +10,7 @@ FROM quay.io/almalinuxorg/atomic-desktop-gnome:10@sha256:e3b4f9d5575ffef3cbbfc9b
 
 ARG IMAGE_NAME
 ARG IMAGE_REGISTRY
+ARG VARIANT
 
 RUN --mount=type=tmpfs,dst=/opt \
     --mount=type=tmpfs,dst=/tmp \

Makefile

@@ -3,6 +3,7 @@ PODMAN = $(SUDO) podman
 
 IMAGE_NAME ?= localhost/myimage
 CONTAINER_FILE ?= ./Dockerfile
+VARIANT ?=
 IMAGE_CONFIG ?= ./iso.toml
 
 IMAGE_TYPE ?= iso
@@ -22,6 +23,7 @@ image:
 		--device /dev/fuse \
 		--build-arg IMAGE_NAME=$(IMAGE_NAME) \
 		--build-arg IMAGE_REGISTRY=localhost \
+		--build-arg VARIANT=$(VARIANT) \
 		-t $(IMAGE_NAME) \
 		-f $(CONTAINER_FILE) \
 		.

files/scripts/10-base.sh

@@ -6,3 +6,11 @@ set -xeuo pipefail
 
 dnf install -y 'dnf-command(config-manager)'
 dnf config-manager --set-enabled crb
+
+if [[ "${VARIANT}" == "gnome" ]]; then
+    echo "Installing gnome"
+elif [[ "${VARIANT}" == "kde" ]]; then
+    echo "Installing kde"
+else
+    echo "Neutral variant"
+fi