Upgrading antora ui package and use package.json

.gitignore

@@ -25,5 +25,5 @@ _configprops.adoc
 _spans.adoc
 _metrics.adoc
 _conventions.adoc
-package.json
+/package.json
 package-lock.json

docs/antora-playbook.yml

@@ -1,14 +1,7 @@
 antora:
   extensions:
-    - '@springio/antora-extensions/partial-build-extension'
-    # atlas-extension must be before latest-version-extension so latest versions are applied to imported versions
-    - '@antora/atlas-extension'
-    - require: '@springio/antora-extensions/latest-version-extension'
-    - require: '@springio/antora-extensions/inject-collector-cache-config-extension'
-    - '@antora/collector-extension'
-    - require: '@springio/antora-extensions/root-component-extension'
+    - require: '@springio/antora-extensions'
       root_component_name: 'cloud-build'
-    - '@springio/antora-extensions/static-page-extension'
 site:
   title: Spring Cloud Build
   url: https://docs.spring.io/spring-cloud-build/reference/
@@ -37,4 +30,4 @@ runtime:
     format: pretty
 ui:
   bundle:
-    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.11/ui-bundle.zip
+    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.4.15/ui-bundle.zip

docs/package.json

@@ -0,0 +1,10 @@
+{
+  "dependencies": {
+    "antora": "3.2.0-alpha.4",
+    "@antora/atlas-extension": "1.0.0-alpha.2",
+    "@antora/collector-extension": "1.0.0-alpha.3",
+    "@asciidoctor/tabs": "1.0.0-beta.6",
+    "@springio/antora-extensions": "1.11.1",
+    "@springio/asciidoctor-extensions": "1.0.0-alpha.10"
+  }
+}

docs/pom.xml

@@ -114,7 +114,7 @@
 						<artifactId>antora-component-version-maven-plugin</artifactId>
 					</plugin>
 					<plugin>
-						<groupId>io.spring.maven.antora</groupId>
+						<groupId>org.antora</groupId>
 						<artifactId>antora-maven-plugin</artifactId>
 					</plugin>
 					<plugin>

pom.xml

@@ -139,6 +139,7 @@
 		<copy-missing-html-files.phase>package</copy-missing-html-files.phase>
 		<package-and-attach-docs-zip.phase>package</package-and-attach-docs-zip.phase>
 		<antora-maven-plugin.version>0.0.4</antora-maven-plugin.version>
+		<org-antora-maven-plugin.version>1.0.0-alpha.4</org-antora-maven-plugin.version>
 		<antora-maven-plugin.phase>prepare-package</antora-maven-plugin.phase>
 		<generate-readme.phase>prepare-package</generate-readme.phase>
 		<generate-cloud-resources.phase>generate-resources</generate-cloud-resources.phase>
@@ -1066,22 +1067,14 @@
 							</executions>
 						</plugin>
 						<plugin>
-							<groupId>io.spring.maven.antora</groupId>
+							<groupId>org.antora</groupId>
 							<artifactId>antora-maven-plugin</artifactId>
-							<version>${antora-maven-plugin.version}</version>
+							<version>${org-antora-maven-plugin.version}</version>
 							<configuration>
 								<!-- TODO: remove when CI upgrades past ubuntu 1804 -->
 								<node>
 									<version>v16.16.0</version>
 								</node>
-								<packages>
-									<package>@antora/atlas-extension@1.0.0-alpha.1</package>
-									<package>@antora/collector-extension@1.0.0-alpha.3</package>
-									<package>@asciidoctor/tabs@1.0.0-beta.3</package>
-									<package>@springio/antora-extensions@1.6.0</package>
-									<package>@springio/asciidoctor-extensions@1.0.0-alpha.9</package>
-									<package>asciidoctor-kroki@0.17.0</package>
-								</packages>
 							</configuration>
 							<executions>
 								<execution>