.

iridium_installer/backend/os_install.py

@@ -118,6 +118,20 @@ def install_minimal_os(mount_root, releasever="43"):
         "vim-minimal",
     ]
 
+    # Offline installation logic
+    iso_repo = "/run/install/repo"
+    dnf_offline_args = []
+    
+    if os.path.exists(iso_repo):
+        logger.info(f"Found ISO repository at {iso_repo}. Using offline mode.")
+        dnf_offline_args = [
+            "--disablerepo=*",
+            f"--repofrompath=iridium-iso,{iso_repo}",
+            "--enablerepo=iridium-iso"
+        ]
+    else:
+        logger.warning(f"ISO repository not found at {iso_repo}. Falling back to host configuration.")
+
     cmd = [
         "dnf",
         "install",
@@ -127,7 +141,7 @@ def install_minimal_os(mount_root, releasever="43"):
         "--use-host-config",
         "--setopt=install_weak_deps=False",
         "--nodocs",
-    ] + packages
+    ] + dnf_offline_args + packages
 
     with mount_pseudo_fs(mount_root):
         run_command(cmd)