Provide a means to disable the registry service install

A bifrost user reported issues with their CI jobs which
utilize bifrost, because they run bifrost in a container....
which I guess is a thing because folks have been doing it
for ages, but we're not going to argue there.

The reality is the registry is a bit much and we now provide
a means to disable it.

Assisted-by: Claude Code - Claude Sonnet 4.5
Change-Id: I41ab1c1fffd842dbcf963d98d9302bb0bc8568f8
Signed-off-by: Julia Kreger <juliaashleykreger@gmail.com>

bifrost/cli.py

@@ -187,6 +187,7 @@ def cmd_install(args):
             enable_prometheus_exporter=args.enable_prometheus_exporter,
             default_boot_mode=args.boot_mode or 'uefi',
             enable_dhcp=not args.disable_dhcp,
+            enable_registry=not args.disable_registry,
             extra_vars=args.extra_vars,
             params_output_file=args.output,
             **kwargs)
@@ -336,6 +337,8 @@ def parse_args():
                            help='use legacy boot (BIOS) by default')
     install.add_argument('--disable-dhcp', action='store_true',
                          help='Disable integrated dhcp server')
+    install.add_argument('--disable-registry', action='store_true',
+                         help='Disable OCI image registry installation')
     install.add_argument('-e', '--extra-vars', action='append',
                          help='additional vars to pass to ansible')
     install.add_argument('-o', '--output',

playbooks/install.yaml

@@ -35,7 +35,8 @@
     - bifrost-keystone-install
     - bifrost-ironic-install
     - bifrost-logrotate-install
-    - bifrost-registry-install
+    - role: bifrost-registry-install
+      when: enable_registry | default(true) | bool
     - role: bifrost-keystone-client-config
       user: "{{ ansible_env.SUDO_USER | default(ansible_user_id) }}"
       clouds:

playbooks/roles/bifrost-registry-install/defaults/main.yml

@@ -1,4 +1,7 @@
 ---
+# Enable/disable registry installation (can be overridden)
+enable_registry: true
+
 # Registry service configuration
 registry_image: "quay.io/opendevmirror/registry:2"
 

releasenotes/notes/optional-registry-install-95b69d1e03337b9e.yaml

@@ -0,0 +1,12 @@
+---
+features:
+  - |
+    The OCI image registry installation can now be disabled using the
+    ``enable_registry`` variable or the ``--disable-registry`` CLI flag.
+    The registry remains enabled by default to maintain backward
+    compatibility.
+
+    To disable during installation:
+
+    * CLI: ``bifrost-cli install --disable-registry``
+    * Ansible: ``-e enable_registry=false``