Remove JDK 18 CI

Closes gh-32290

Author: wilkinsona

ci/images/ci-image-jdk18/Dockerfile

@@ -11,9 +11,6 @@ case "$1" in
 	java17)
 		 echo "https://github.com/bell-sw/Liberica/releases/download/17.0.4.1+1/bellsoft-jdk17.0.4.1+1-linux-amd64.tar.gz"
 	;;
-	java18)
-		 echo "https://github.com/bell-sw/Liberica/releases/download/18.0.2.1+1/bellsoft-jdk18.0.2.1+1-linux-amd64.tar.gz"
-	;;
 	java19)
 		 echo "https://github.com/bell-sw/Liberica/releases/download/19+37/bellsoft-jdk19+37-linux-amd64.tar.gz"
 	;;

ci/images/get-jdk-url.sh

@@ -193,12 +193,6 @@ resources:
   source:
     <<: *registry-image-resource-source
     repository: ((docker-hub-organization))/spring-boot-ci-jdk17
-- name: ci-image-jdk18
-  type: registry-image
-  icon: docker
-  source:
-    <<: *registry-image-resource-source
-    repository: ((docker-hub-organization))/spring-boot-ci-jdk18
 - name: ci-image-jdk19
   type: registry-image
   icon: docker
@@ -243,14 +237,6 @@ resources:
     access_token: ((github-ci-status-token))
     branch: ((branch))
     context: jdk17-build
-- name: repo-status-jdk18-build
-  type: github-status-resource
-  icon: eye-check-outline
-  source:
-    repository: ((github-repo-name))
-    access_token: ((github-ci-status-token))
-    branch: ((branch))
-    context: jdk18-build
 - name: repo-status-jdk19-build
   type: github-status-resource
   icon: eye-check-outline
@@ -311,14 +297,6 @@ jobs:
       vars:
         ci-image-name: ci-image-jdk17
         <<: *docker-hub-mirror-vars
-    - task: build-ci-image-jdk18
-      privileged: true
-      file: git-repo/ci/tasks/build-ci-image.yml
-      output_mapping:
-        image: ci-image-jdk18
-      vars:
-        ci-image-name: ci-image-jdk18
-        <<: *docker-hub-mirror-vars
     - task: build-ci-image-jdk19
       privileged: true
       file: git-repo/ci/tasks/build-ci-image.yml
@@ -337,9 +315,6 @@ jobs:
     - put: ci-image-jdk17
       params:
         image: ci-image-jdk17/image.tar
-    - put: ci-image-jdk18
-      params:
-        image: ci-image-jdk18/image.tar
     - put: ci-image-jdk19
       params:
         image: ci-image-jdk19/image.tar
@@ -368,12 +343,6 @@ jobs:
       params:
         <<: *github-task-params
         JDK_VERSION: java17
-    - task: detect-jdk18-update
-      image: ci-image
-      file: git-repo/ci/tasks/detect-jdk-updates.yml
-      params:
-        <<: *github-task-params
-        JDK_VERSION: java18
     - task: detect-jdk19-update
       image: ci-image
       file: git-repo/ci/tasks/detect-jdk-updates.yml
@@ -524,38 +493,6 @@ jobs:
     - put: slack-alert
       params:
         <<: *slack-success-params
-- name: jdk18-build
-  serial: true
-  public: true
-  plan:
-    - get: ci-image-jdk18
-    - get: git-repo
-      trigger: true
-    - put: repo-status-jdk18-build
-      params: { state: "pending", commit: "git-repo" }
-    - do:
-        - task: build-project
-          image: ci-image-jdk18
-          privileged: true
-          timeout: ((task-timeout))
-          file: git-repo/ci/tasks/build-project.yml
-          params:
-            BRANCH: ((branch))
-            TOOLCHAIN_JAVA_VERSION: 18
-            <<: *gradle-enterprise-task-params
-            <<: *docker-hub-task-params
-      on_failure:
-        do:
-          - put: repo-status-jdk18-build
-            params: { state: "failure", commit: "git-repo" }
-          - put: slack-alert
-            params:
-              <<: *slack-fail-params
-    - put: repo-status-jdk18-build
-      params: { state: "success", commit: "git-repo" }
-    - put: slack-alert
-      params:
-        <<: *slack-success-params
 - name: jdk19-build
   serial: true
   public: true
@@ -912,35 +849,6 @@ jobs:
     - put: slack-alert
       params:
         <<: *slack-success-params
-- name: jdk18-run-system-tests
-  serial: true
-  public: true
-  plan:
-    - get: ci-image-jdk18
-    - get: git-repo
-    - get: paketo-builder-base-image
-      trigger: true
-    - get: daily
-      trigger: true
-    - do:
-        - task: run-system-tests
-          image: ci-image-jdk18
-          privileged: true
-          timeout: ((task-timeout))
-          file: git-repo/ci/tasks/run-system-tests.yml
-          params:
-            BRANCH: ((branch))
-            TOOLCHAIN_JAVA_VERSION: 18
-            <<: *gradle-enterprise-task-params
-            <<: *docker-hub-task-params
-      on_failure:
-        do:
-          - put: slack-alert
-            params:
-              <<: *slack-fail-params
-    - put: slack-alert
-      params:
-        <<: *slack-success-params
 - name: jdk19-run-system-tests
   serial: true
   public: true
@@ -972,11 +880,11 @@ jobs:
         <<: *slack-success-params
 groups:
 - name: "builds"
-  jobs: ["build", "jdk11-build", "jdk17-build", "jdk18-build", "jdk19-build", "windows-build"]
+  jobs: ["build", "jdk11-build", "jdk17-build", "jdk19-build", "windows-build"]
 - name: "releases"
   jobs: ["stage-milestone", "stage-rc", "stage-release", "promote-milestone", "promote-rc", "promote-release", "create-github-release", "publish-gradle-plugin", "publish-to-sdkman", "update-homebrew-tap"]
 - name: "system-tests"
-  jobs: ["run-system-tests", "jdk11-run-system-tests", "jdk17-run-system-tests", "jdk18-run-system-tests", "jdk19-run-system-tests"]
+  jobs: ["run-system-tests", "jdk11-run-system-tests", "jdk17-run-system-tests", "jdk19-run-system-tests"]
 - name: "ci-images"
   jobs: ["build-ci-images", "detect-docker-updates", "detect-jdk-updates", "detect-ubuntu-image-updates"]
 - name: "pull-requests"

ci/pipeline.yml

@@ -20,10 +20,6 @@ case "$JDK_VERSION" in
 		 BASE_URL="https://api.bell-sw.com/v1/liberica/releases?version-feature=17"
 		 ISSUE_TITLE="Upgrade Java 17 version in CI image"
 	;;
-	java18)
-		 BASE_URL="https://api.bell-sw.com/v1/liberica/releases?version-feature=18"
-		 ISSUE_TITLE="Upgrade Java 18 version in CI image"
-	;;
 	java19)
 		 BASE_URL="https://api.bell-sw.com/v1/liberica/releases?version-feature=19"
 		 ISSUE_TITLE="Upgrade Java 19 version in CI image"