support runtime vars in addon itself

Jenkinsfile

@@ -83,7 +83,7 @@ pipeline {
               script {
                 try {
                   sh '''docker pull plone; docker run -d --name="$BUILD_TAG-plone" -e SITE="Plone" -e PROFILES="profile-plone.restapi:blocks" plone fg'''
-                  sh '''docker pull plone/volto-addon-ci; docker run -i --name="$BUILD_TAG-cypress" --link $BUILD_TAG-plone:plone -e NAMESPACE="$NAMESPACE" -e RAZZLE_FRONTEND_VERSION=eeacms/forests-frontend:2.4.3 -e RAZZLE_FRONTEND_VERSION_URL=https://github.com/eea/forests-frontend/releases/tag/2.4.3 -e RAZZLE_FRONTEND_PUBLISHED_AT=2021-06-18T15:15:04Z -e GIT_NAME=$GIT_NAME -e GIT_BRANCH="$BRANCH_NAME" -e GIT_CHANGE_ID="$CHANGE_ID" -e DEPENDENCIES="$DEPENDENCIES" plone/volto-addon-ci cypress'''
+                  sh '''docker pull plone/volto-addon-ci; docker run -i --name="$BUILD_TAG-cypress" --link $BUILD_TAG-plone:plone -e NAMESPACE="$NAMESPACE" -e GIT_NAME=$GIT_NAME -e GIT_BRANCH="$BRANCH_NAME" -e GIT_CHANGE_ID="$CHANGE_ID" -e DEPENDENCIES="$DEPENDENCIES" plone/volto-addon-ci cypress'''
                 } finally {
                   try {
                     sh '''rm -rf cypress-reports cypress-results cypress-coverage'''

src/constants/runtime.js

@@ -0,0 +1,4 @@
+export const RAZZLE_FRONTEND_VERSION = 'eeacms/forests-frontend:2.4.3';
+export const RAZZLE_FRONTEND_VERSION_URL =
+  'https://github.com/eea/forests-frontend/releases/tag/2.4.3';
+export const RAZZLE_FRONTEND_PUBLISHED_AT = '2021-06-18T15:15:04Z';

src/index.js

@@ -6,6 +6,11 @@ import { applyConfig as installFiseFrontend } from './localconfig';
 
 import ObjectListInlineWidget from './components/manage/Widgets/ObjectListInlineWidget';
 import reducers from '@eeacms/volto-forests-theme/reducers';
+import {
+  RAZZLE_FRONTEND_VERSION,
+  RAZZLE_FRONTEND_VERSION_URL,
+  RAZZLE_FRONTEND_PUBLISHED_AT,
+} from '@eeacms/volto-forests-theme/constants/runtime';
 
 import '@plone/volto/config';
 
@@ -19,9 +24,12 @@ export default function applyConfig(config) {
   config.settings = {
     ...config.settings,
     frontendMeta: {
-      version: process.env.RAZZLE_FRONTEND_VERSION || null,
-      version_url: process.env.RAZZLE_FRONTEND_VERSION_URL || null,
-      published_at: process.env.RAZZLE_FRONTEND_PUBLISHED_AT || null,
+      version: process.env.RAZZLE_FRONTEND_VERSION || RAZZLE_FRONTEND_VERSION,
+      version_url:
+        process.env.RAZZLE_FRONTEND_VERSION_URL || RAZZLE_FRONTEND_VERSION_URL,
+      published_at:
+        process.env.RAZZLE_FRONTEND_PUBLISHED_AT ||
+        RAZZLE_FRONTEND_PUBLISHED_AT,
     },
     timezone: 'CET',
     pathsWithFullobjects: ['/news', '/events'],