Use LABEL instead of MAINTAINER (deprecated) in all Dockerfile.j2

Use LABEL instruction instead of MAINTAINER (deprecated) instruc-
tion as suggested by Docker's official dockerfile guide.
docs.docker.com/engine/reference/builder/#maintainer-deprecated

Closes-Bug: #1683652

Change-Id: Ie87a1ddf31aefcd0b623fd2837d78de420e76898

13 files changed, 13 insertions, 13 deletions

diff --git a/docker/nova/nova-api/Dockerfile.j2 b/docker/nova/nova-api/Dockerfile.j2
index e31d7abc2..966fdbb99 100644
--- a/docker/nova/nova-api/Dockerfile.j2
+++ b/docker/nova/nova-api/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_api_header %}{% endblock %}
 
diff --git a/docker/nova/nova-base/Dockerfile.j2 b/docker/nova/nova-base/Dockerfile.j2
index c3bc21d89..e4f4652a2 100644
--- a/docker/nova/nova-base/Dockerfile.j2
+++ b/docker/nova/nova-base/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}openstack-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_base_header %}{% endblock %}
 
diff --git a/docker/nova/nova-compute-ironic/Dockerfile.j2 b/docker/nova/nova-compute-ironic/Dockerfile.j2
index 04ba49070..947d84257 100644
--- a/docker/nova/nova-compute-ironic/Dockerfile.j2
+++ b/docker/nova/nova-compute-ironic/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_compute_ironic_header %}{% endblock %}
 
diff --git a/docker/nova/nova-compute/Dockerfile.j2 b/docker/nova/nova-compute/Dockerfile.j2
index 256c92d23..a2109dc7f 100644
--- a/docker/nova/nova-compute/Dockerfile.j2
+++ b/docker/nova/nova-compute/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_compute_header %}{% endblock %}
 
diff --git a/docker/nova/nova-conductor/Dockerfile.j2 b/docker/nova/nova-conductor/Dockerfile.j2
index b2c1cc23e..8c5ce5d1d 100644
--- a/docker/nova/nova-conductor/Dockerfile.j2
+++ b/docker/nova/nova-conductor/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_conductor_header %}{% endblock %}
 
diff --git a/docker/nova/nova-consoleauth/Dockerfile.j2 b/docker/nova/nova-consoleauth/Dockerfile.j2
index b80a68329..6f4af35b0 100644
--- a/docker/nova/nova-consoleauth/Dockerfile.j2
+++ b/docker/nova/nova-consoleauth/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_consoleauth_header %}{% endblock %}
 
diff --git a/docker/nova/nova-libvirt/Dockerfile.j2 b/docker/nova/nova-libvirt/Dockerfile.j2
index 7adb7ba3a..5d1024961 100644
--- a/docker/nova/nova-libvirt/Dockerfile.j2
+++ b/docker/nova/nova-libvirt/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_libvirt_header %}{% endblock %}
 
diff --git a/docker/nova/nova-novncproxy/Dockerfile.j2 b/docker/nova/nova-novncproxy/Dockerfile.j2
index 62cc9b5f3..0091e7aa8 100644
--- a/docker/nova/nova-novncproxy/Dockerfile.j2
+++ b/docker/nova/nova-novncproxy/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_novncproxy_header %}{% endblock %}
 
diff --git a/docker/nova/nova-placement-api/Dockerfile.j2 b/docker/nova/nova-placement-api/Dockerfile.j2
index 69405dee2..20293a1a5 100644
--- a/docker/nova/nova-placement-api/Dockerfile.j2
+++ b/docker/nova/nova-placement-api/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_placement_api_header %}{% endblock %}
 
diff --git a/docker/nova/nova-scheduler/Dockerfile.j2 b/docker/nova/nova-scheduler/Dockerfile.j2
index f7ddb228f..7d4fdc7b8 100644
--- a/docker/nova/nova-scheduler/Dockerfile.j2
+++ b/docker/nova/nova-scheduler/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_scheduler_header %}{% endblock %}
 
diff --git a/docker/nova/nova-serialproxy/Dockerfile.j2 b/docker/nova/nova-serialproxy/Dockerfile.j2
index a0f222886..558dd0191 100644
--- a/docker/nova/nova-serialproxy/Dockerfile.j2
+++ b/docker/nova/nova-serialproxy/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_serialproxy_header %}{% endblock %}
 
diff --git a/docker/nova/nova-spicehtml5proxy/Dockerfile.j2 b/docker/nova/nova-spicehtml5proxy/Dockerfile.j2
index 88e6c3aa9..eb4277181 100644
--- a/docker/nova/nova-spicehtml5proxy/Dockerfile.j2
+++ b/docker/nova/nova-spicehtml5proxy/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_spicehtml5proxy_header %}{% endblock %}
 
diff --git a/docker/nova/nova-ssh/Dockerfile.j2 b/docker/nova/nova-ssh/Dockerfile.j2
index bbee5dbe3..530e46aea 100644
--- a/docker/nova/nova-ssh/Dockerfile.j2
+++ b/docker/nova/nova-ssh/Dockerfile.j2
@@ -1,5 +1,5 @@
 FROM {{ namespace }}/{{ image_prefix }}nova-base:{{ tag }}
-MAINTAINER {{ maintainer }}
+LABEL maintainer="{{ maintainer }}"
 
 {% block nova_ssh_header %}{% endblock %}