switch to ecr-public repo

plantbuild/build.jsonnet

@@ -1,6 +1,6 @@
 local c = import 'dc.jsonnet';
 local dc = c {
-  dockerRegistry: '562055475000.dkr.ecr.ap-northeast-1.amazonaws.com',
+  dockerRegistry: 'public.ecr.aws',
 };
 
 dc.build_apps_image('qor5/qor5', [

plantbuild/images.jsonnet

@@ -1,6 +1,6 @@
 local k8s = import 'k8s.jsonnet';
 
-local ecr_prefix = '562055475000.dkr.ecr.ap-northeast-1.amazonaws.com/qor5/';
+local ecr_prefix = 'public.ecr.aws/qor5/';
 
 local images = [
   { type: 'deployment', name: 'docs', image: ecr_prefix + 'docs' },