Add twig extends syntax to override Jenkinsfile

Base blocks are able to be optionally overriden

Just an idea atm to get feedback. Perhaps the base file is small enough with notification template change without having to introduce it

application/overlay/Jenkinsfile.twig

@@ -1,28 +1,43 @@
 {% set blocks  = 'application/overlay/_twig/Jenkinsfile/' %}
-def failureMessages = []
-pipeline {
-    agent { label 'linux-amd64' }
-    environment {
-        COMPOSE_DOCKER_CLI_BUILD = {{ @('jenkins.docker.buildkit.enabled') ? '1' : '0' }}
-        DOCKER_BUILDKIT = {{ @('jenkins.docker.buildkit.enabled') ? '1' : '0' }}
-        {% if @('jenkins.credentials.my127ws_key') %}
-        MY127WS_KEY = credentials('{{ @('jenkins.credentials.my127ws_key') }}')
-        {% endif %}
-        MY127WS_ENV = "pipeline"
-    }
-    triggers { cron(env.BRANCH_NAME == '{{ @('git.default_branch') }}' ? 'H H(2-6) * * 1' : '') }
-    stages {
-{% include blocks ~ 'stages.twig' %}
+{% extends blocks ~ 'base.twig' %}
+
+{#
+{% block agent %}
+    agent {
+        docker {
+            label 'linux-amd64'
+            alwaysPull true
+            image 'quay.io/inviqa_images/workspace:latest'
+            args '--group-add docker --entrypoint "" --volume /var/run/docker.sock:/var/run/docker.sock --volume "$HOME/.my127:/root/.my127"'
+        }
     }
-    post {
-{% if @('jenkins.notifications.slack.channel') and @('jenkins.notifications.slack.token_credential_id') %}
-        failure {
-{% include blocks ~ 'slack-notification.twig' %}
+{% endblock %}
+
+{% block stages %}
+        stage('Build, Test') {
+            when {
+                anyOf {
+                    triggeredBy 'TimerTrigger'
+                    allOf {
+                        not { branch 'main' }
+                    }
+                }
+            }
+            stages {
+                {% include blocks ~ 'stages-build-test.twig' %}
+            }
         }
-{% endif %}
-        always {
-            sh 'ws destroy'
-            cleanWs()
+        stage('Publish, Release') {
+            when {
+                not { triggeredBy 'TimerTrigger' }
+                anyOf {
+                    branch 'develop'
+                    branch 'main'
+                }
+            }
+            stages {
+                {% include blocks ~ 'stages-publish-release.twig' %}
+            }
         }
-    }
-}
+{% endblock %}
+#}

application/overlay/_twig/Jenkinsfile/base.twig

@@ -0,0 +1,33 @@
+{% set blocks  = 'application/overlay/_twig/Jenkinsfile/' %}
+def failureMessages = []
+pipeline {
+{% block agent %}
+    agent { label 'linux-amd64' }
+{% endblock %}
+    environment {
+{% block environment %}
+        COMPOSE_DOCKER_CLI_BUILD = {{ @('jenkins.docker.buildkit.enabled') ? '1' : '0' }}
+        DOCKER_BUILDKIT = {{ @('jenkins.docker.buildkit.enabled') ? '1' : '0' }}
+        {% if @('jenkins.credentials.my127ws_key') %}
+        MY127WS_KEY = credentials('{{ @('jenkins.credentials.my127ws_key') }}')
+        {% endif %}
+        MY127WS_ENV = "pipeline"
+{% endblock %}
+    }
+    triggers { cron(env.BRANCH_NAME == '{{ @('git.default_branch') }}' ? 'H H(2-6) * * 1' : '') }
+    stages {
+{% block stages %}
+{% include blocks ~ 'stages-build-test.twig' %}
+{% include blocks ~ 'stages-publish-release.twig' %}
+{% endblock %}
+    }
+    post {
+{% block post %}
+{% include blocks ~ 'slack-notification.twig' %}
+        always {
+            sh 'ws destroy'
+            cleanWs()
+        }
+{% endblock %}
+    }
+}

application/overlay/_twig/Jenkinsfile/stages.twig → application/overlay/_twig/Jenkinsfile/stages-build-test.twig

@@ -9,6 +9,3 @@
 {% include blocks ~ 'stages/build.twig' %}
 {% include blocks ~ 'stages/test.twig' %}
 {% endif %}
-
-{% include blocks ~ 'stages/publish.twig' %}
-{% include blocks ~ 'stages/deploy.twig' %}

application/overlay/_twig/Jenkinsfile/stages-publish-release.twig

@@ -0,0 +1,2 @@
+{% include blocks ~ 'stages/publish.twig' %}
+{% include blocks ~ 'stages/deploy.twig' %}