diff --git a/images/barbican/Dockerfile b/images/barbican/Dockerfile
index 819a37e..8554a7f 100644
--- a/images/barbican/Dockerfile
+++ b/images/barbican/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG BARBICAN_GIT_REF=00274b2f07d050c5b4571bfc0f4e5698acf678f1
 ADD --keep-git-dir=true https://opendev.org/openstack/barbican.git#${BARBICAN_GIT_REF} /src/barbican
 RUN git -C /src/barbican fetch --unshallow
@@ -14,5 +15,5 @@
         pykmip
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 COPY --from=build --link /var/lib/openstack /var/lib/openstack
diff --git a/images/cinder/Dockerfile b/images/cinder/Dockerfile
index e45eef4..1fef93c 100644
--- a/images/cinder/Dockerfile
+++ b/images/cinder/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2025-01-13T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG CINDER_GIT_REF=9e667b02b2c20b4ada18c1a472be152956284d45
 ADD --keep-git-dir=true https://opendev.org/openstack/cinder.git#${CINDER_GIT_REF} /src/cinder
 RUN git -C /src/cinder fetch --unshallow
@@ -25,7 +26,7 @@
     https://github.com/storpool/storpool-openstack-integration/raw/master/drivers/os_brick/openstack/antelope/storpool.py \
     /var/lib/openstack/lib/python3.10/site-packages/os_brick/initiator/connectors/storpool.py
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/designate/Dockerfile b/images/designate/Dockerfile
index d073973..8b21efc 100644
--- a/images/designate/Dockerfile
+++ b/images/designate/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG DESIGNATE_GIT_REF=2c817b3d7f01de44023f195c6e8de8853683a54a
 ADD --keep-git-dir=true https://opendev.org/openstack/designate.git#${DESIGNATE_GIT_REF} /src/designate
 RUN git -C /src/designate fetch --unshallow
@@ -15,7 +16,7 @@
         /src/designate
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/glance/Dockerfile b/images/glance/Dockerfile
index 8032c4d..3516c0c 100644
--- a/images/glance/Dockerfile
+++ b/images/glance/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG GLANCE_GIT_REF=835c89c711993c51aa8752d96b4c8effa1a97009
 ADD --keep-git-dir=true https://opendev.org/openstack/glance.git#${GLANCE_GIT_REF} /src/glance
 RUN git -C /src/glance fetch --unshallow
@@ -21,7 +22,7 @@
     https://github.com/storpool/storpool-openstack-integration/raw/master/drivers/os_brick/openstack/antelope/storpool.py \
     /var/lib/openstack/lib/python3.10/site-packages/os_brick/initiator/connectors/storpool.py
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/heat/Dockerfile b/images/heat/Dockerfile
index 5171a47..9fed654 100644
--- a/images/heat/Dockerfile
+++ b/images/heat/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG HEAT_GIT_REF=39eca5de2e193f652792e4f7be2e5eb96dd3d853
 ADD --keep-git-dir=true https://opendev.org/openstack/heat.git#${HEAT_GIT_REF} /src/heat
 RUN git -C /src/heat fetch --unshallow
@@ -13,7 +14,7 @@
         /src/heat
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/horizon/Dockerfile b/images/horizon/Dockerfile
index 14f01d4..405c442 100644
--- a/images/horizon/Dockerfile
+++ b/images/horizon/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG HORIZON_GIT_REF=593ef9b56191676d0a85b55bd152c0c757fad2de
 ADD --keep-git-dir=true https://opendev.org/openstack/horizon.git#${HORIZON_GIT_REF} /src/horizon
 RUN git -C /src/horizon fetch --unshallow
@@ -39,7 +40,7 @@
         pymemcache
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/ironic/Dockerfile b/images/ironic/Dockerfile
index e84e5af..43b79c5 100644
--- a/images/ironic/Dockerfile
+++ b/images/ironic/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG IRONIC_GIT_REF=009f73717cee1c4d523c75d9232cc11902c9173a
 ADD --keep-git-dir=true https://opendev.org/openstack/ironic.git#${IRONIC_GIT_REF} /src/ironic
 RUN git -C /src/ironic fetch --unshallow
@@ -15,7 +16,7 @@
         sushy
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/keepalived/Dockerfile b/images/keepalived/Dockerfile
index e5dacfe..9db8314 100644
--- a/images/keepalived/Dockerfile
+++ b/images/keepalived/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/ubuntu:${RELEASE}
+FROM ${REGISTRY}/ubuntu:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/keystone/Dockerfile b/images/keystone/Dockerfile
index b528fd3..0093579 100644
--- a/images/keystone/Dockerfile
+++ b/images/keystone/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG KEYSTONE_GIT_REF=7697140fc23cee66b17050651813ebe902671256
 ADD --keep-git-dir=true https://opendev.org/openstack/keystone.git#${KEYSTONE_GIT_REF} /src/keystone
 RUN git -C /src/keystone fetch --unshallow
@@ -16,7 +17,7 @@
         keystone-keycloak-backend==0.1.8
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/libvirtd/Dockerfile b/images/libvirtd/Dockerfile
index 164d601..a025102 100644
--- a/images/libvirtd/Dockerfile
+++ b/images/libvirtd/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2025-01-15T02:05:46Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-runtime:${RELEASE}
 ADD --chmod=644 https://download.ceph.com/keys/release.gpg /etc/apt/trusted.gpg.d/ceph.gpg
 COPY <<EOF /etc/apt/sources.list.d/ceph.list
 deb http://download.ceph.com/debian-reef/ jammy main
diff --git a/images/magnum/Dockerfile b/images/magnum/Dockerfile
index 7c2ed1b..f3dcc3b 100644
--- a/images/magnum/Dockerfile
+++ b/images/magnum/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/ubuntu:${RELEASE} AS helm
+FROM ${REGISTRY}/ubuntu:${RELEASE} AS helm
 ARG TARGETOS
 ARG TARGETARCH
 ARG HELM_VERSION=3.14.0
@@ -11,7 +12,7 @@
 RUN tar -xzf /helm.tar.gz
 RUN mv /${TARGETOS}-${TARGETARCH}/helm /usr/bin/helm
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG MAGNUM_GIT_REF=f3cfcfd8f1d472950642e7103ab59853f5ee63da
 ADD --keep-git-dir=true https://opendev.org/openstack/magnum.git#${MAGNUM_GIT_REF} /src/magnum
 RUN git -C /src/magnum fetch --unshallow
@@ -22,7 +23,7 @@
         magnum-cluster-api==0.24.2
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/manila/Dockerfile b/images/manila/Dockerfile
index 7547376..b1062ac 100644
--- a/images/manila/Dockerfile
+++ b/images/manila/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG MANILA_GIT_REF=ed585103e4c26478b60b397b0bb064b50dc1acb5
 ADD --keep-git-dir=true https://opendev.org/openstack/manila.git#${MANILA_GIT_REF} /src/manila
 RUN git -C /src/manila fetch --unshallow
@@ -15,7 +16,7 @@
         /src/manila
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/netoffload/Dockerfile b/images/netoffload/Dockerfile
index 2294305..66d1c8d 100644
--- a/images/netoffload/Dockerfile
+++ b/images/netoffload/Dockerfile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
 FROM harbor.atmosphere.dev/docker.io/library/golang:1.20 AS build
@@ -9,7 +10,7 @@
 WORKDIR /src
 RUN go build -v -o offloadctl ./cmd/offloadctl/main.go
 
-FROM harbor.atmosphere.dev/library/ubuntu:${RELEASE}
+FROM ${REGISTRY}/ubuntu:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/neutron/Dockerfile b/images/neutron/Dockerfile
index fd8dc59..f785edb 100644
--- a/images/neutron/Dockerfile
+++ b/images/neutron/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG NEUTRON_GIT_REF=81c8fd369b5ba58e53b4af21afbb95e2897dc42e
 ADD --keep-git-dir=true https://opendev.org/openstack/neutron.git#${NEUTRON_GIT_REF} /src/neutron
 RUN git -C /src/neutron fetch --unshallow
@@ -29,7 +30,7 @@
         /src/neutron-ovn-network-logging-parser
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/nova-ssh/Dockerfile b/images/nova-ssh/Dockerfile
index 826613d..966a817 100644
--- a/images/nova-ssh/Dockerfile
+++ b/images/nova-ssh/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/nova/Dockerfile b/images/nova/Dockerfile
index 15e5e34..c561040 100644
--- a/images/nova/Dockerfile
+++ b/images/nova/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-12-17T01:27:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG NOVA_GIT_REF=70a435fd519a0ebcc3ac9ad5254fefbf19c93e48
 ADD --keep-git-dir=true https://opendev.org/openstack/nova.git#${NOVA_GIT_REF} /src/nova
 RUN git -C /src/nova fetch --unshallow
@@ -23,7 +24,7 @@
     https://github.com/storpool/storpool-openstack-integration/raw/master/drivers/os_brick/openstack/antelope/storpool.py \
     /var/lib/openstack/lib/python3.10/site-packages/os_brick/initiator/connectors/storpool.py
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 ADD https://github.com/novnc/noVNC.git#v1.4.0 /usr/share/novnc
 RUN <<EOF bash -xe
 apt-get update -qq
diff --git a/images/octavia/Dockerfile b/images/octavia/Dockerfile
index b24c4dd..5d0fa78 100644
--- a/images/octavia/Dockerfile
+++ b/images/octavia/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG OCTAVIA_GIT_REF=8832cefaa0e5b6ec1e2db8fe77c3995adce0ca6a
 ADD --keep-git-dir=true https://opendev.org/openstack/octavia.git#${OCTAVIA_GIT_REF} /src/octavia
 RUN git -C /src/octavia fetch --unshallow
@@ -16,7 +17,7 @@
         /src/ovn-octavia-provider
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/openstack-runtime/Dockerfile b/images/openstack-runtime/Dockerfile
index 0eb2905..1347103 100644
--- a/images/openstack-runtime/Dockerfile
+++ b/images/openstack-runtime/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-ARG FROM=harbor.atmosphere.dev/library/ubuntu-cloud-archive:${RELEASE}
+ARG FROM=${REGISTRY}/ubuntu-cloud-archive:${RELEASE}
 FROM ${FROM}
 ONBUILD ARG PROJECT
 ONBUILD ARG SHELL=/usr/sbin/nologin
diff --git a/images/openstack-venv-builder/Dockerfile b/images/openstack-venv-builder/Dockerfile
index e38f27e..a4b1a6d 100644
--- a/images/openstack-venv-builder/Dockerfile
+++ b/images/openstack-venv-builder/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/ubuntu-cloud-archive:${RELEASE} AS requirements
+FROM ${REGISTRY}/ubuntu-cloud-archive:${RELEASE} AS requirements
 ARG REQUIREMENTS_GIT_REF=b14cdf8aeba6b7fba4ed85ae4e140d1f52a4038c
 ADD --keep-git-dir=true https://opendev.org/openstack/requirements.git#${REQUIREMENTS_GIT_REF} /src/requirements
 RUN cp /src/requirements/upper-constraints.txt /upper-constraints.txt
@@ -12,7 +13,7 @@
 sed -i '/horizon/d' /upper-constraints.txt
 EOF
 
-FROM harbor.atmosphere.dev/library/python-base:${RELEASE}
+FROM ${REGISTRY}/python-base:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/ovn/Dockerfile b/images/ovn/Dockerfile
index 677d6e8..3aa393c 100644
--- a/images/ovn/Dockerfile
+++ b/images/ovn/Dockerfile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
 FROM harbor.atmosphere.dev/docker.io/library/golang:1.20 AS ovn-kubernetes
@@ -13,7 +14,7 @@
 go build -o /usr/bin/ovn-kube-util ./cmd/ovn-kube-util
 EOF
 
-FROM harbor.atmosphere.dev/library/openvswitch:${RELEASE}
+FROM ${REGISTRY}/openvswitch:${RELEASE}
 ARG TARGETPLATFORM
 ADD --chmod=755 https://dl.k8s.io/release/v1.29.3/bin/${TARGETPLATFORM}/kubectl /usr/local/bin/kubectl
 ARG OVN_SERIES=24.03
diff --git a/images/placement/Dockerfile b/images/placement/Dockerfile
index 6182b9f..761e7a7 100644
--- a/images/placement/Dockerfile
+++ b/images/placement/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG PLACEMENT_GIT_REF=a361622d749d3b24aad638ec1b03a7d7124a87b3
 ADD --keep-git-dir=true https://opendev.org/openstack/placement.git#${PLACEMENT_GIT_REF} /src/placement
 RUN git -C /src/placement fetch --unshallow
@@ -13,5 +14,5 @@
         /src/placement
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 COPY --from=build --link /var/lib/openstack /var/lib/openstack
diff --git a/images/python-base/Dockerfile b/images/python-base/Dockerfile
index 9aba37f..2ddf0bf 100644
--- a/images/python-base/Dockerfile
+++ b/images/python-base/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/ubuntu-cloud-archive:${RELEASE}
+FROM ${REGISTRY}/ubuntu-cloud-archive:${RELEASE}
 ENV PATH=/var/lib/openstack/bin:$PATH
 RUN \
     apt-get update -qq && \
diff --git a/images/python-openstackclient/Dockerfile b/images/python-openstackclient/Dockerfile
index 7a098c1..cfb76bc 100644
--- a/images/python-openstackclient/Dockerfile
+++ b/images/python-openstackclient/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 RUN --mount=type=cache,mode=0755,target=/root/.cache/pip,sharing=private <<EOF bash -xe
 pip3 install \
     --constraint /upper-constraints.txt \
@@ -21,7 +22,7 @@
         python-swiftclient
 EOF
 
-FROM harbor.atmosphere.dev/library/python-base:${RELEASE}
+FROM ${REGISTRY}/python-base:${RELEASE}
 COPY --from=build --link /var/lib/openstack /var/lib/openstack
 
 # NOTE(mnaser): The Magnum client relies on the SHELL environment variable
diff --git a/images/staffeln/Dockerfile b/images/staffeln/Dockerfile
index b4e930d..e2d1340 100644
--- a/images/staffeln/Dockerfile
+++ b/images/staffeln/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG STAFFELN_GIT_REF=v2.2.3
 ADD --keep-git-dir=true https://github.com/vexxhost/staffeln.git#${STAFFELN_GIT_REF} /src/staffeln
 RUN git -C /src/staffeln fetch --unshallow
@@ -13,5 +14,5 @@
         /src/staffeln
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 COPY --from=build --link /var/lib/openstack /var/lib/openstack
diff --git a/images/tempest/Dockerfile b/images/tempest/Dockerfile
index aa1c033..027cb7b 100644
--- a/images/tempest/Dockerfile
+++ b/images/tempest/Dockerfile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
 FROM harbor.atmosphere.dev/docker.io/library/golang:1.18 AS octavia-test-server
@@ -10,7 +11,7 @@
     -o /build/test_server.bin \
     /src/octavia_tempest_plugin/contrib/test_server/test_server.go
 
-FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM ${REGISTRY}/openstack-venv-builder:${RELEASE} AS build
 ARG TEMPEST_GIT_REF=c0da6e843a74c2392c8e87e8ff36d2fea12949c4
 ADD --keep-git-dir=true https://opendev.org/openstack/tempest.git#${TEMPEST_GIT_REF} /src/tempest
 RUN git -C /src/tempest fetch --unshallow
@@ -39,7 +40,7 @@
         /src/octavia-tempest-plugin
 EOF
 
-FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM ${REGISTRY}/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
diff --git a/images/ubuntu-cloud-archive/Dockerfile b/images/ubuntu-cloud-archive/Dockerfile
index 65550c4..5612548 100644
--- a/images/ubuntu-cloud-archive/Dockerfile
+++ b/images/ubuntu-cloud-archive/Dockerfile
@@ -1,9 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 # Atmosphere-Rebuild-Time: 2024-06-25T13:53:44Z
 
+ARG REGISTRY
 ARG RELEASE
 
-FROM harbor.atmosphere.dev/library/ubuntu:${RELEASE}
+FROM ${REGISTRY}/ubuntu:${RELEASE}
 COPY trusted.gpg.d/ubuntu-cloud-keyring.gpg /etc/apt/trusted.gpg.d/ubuntu-cloud-keyring.gpg
 COPY <<EOF /etc/apt/sources.list.d/cloudarchive.list
 deb http://ubuntu-cloud.archive.canonical.com/ubuntu jammy-updates/bobcat main