ci: use env var for URL

.gitlab-ci.yml

 # The Docker image that will be used to build your app
 image: node:16.13.2-slim
 
+variables:
+  SUB_GROUP:          "www"
+  ASTRO_URL:  "https://${CI_PROJECT_ROOT_NAMESPACE}.${CI_PAGES_DOMAIN}"
+  ASTRO_BASE: "/${CI_PROJECT_NAMESPACE}"
+
+
 pages:
   stage: deploy
   tags:
@@ -10,6 +16,7 @@ pages:
       - node_modules/
   script:
     # Specify the steps involved to build your app here
+    - echo "Astro full URL is ${ASTRO_URL}${ASTRO_BASE}"
     - npm ci
     - npm run build
   artifacts:

astro.config.mjs

@@ -6,6 +6,6 @@ export default defineConfig({
   sitemap: true,
   outDir: 'public',
   publicDir: 'static',
-  site: 'https://froggit.froggit.page',
-  base: '/poc/astrojs'
+  site: process.env.ASTRO_URL ||'https://domain.tld',
+  base: process.env.ASTRO_BASE || '/'
 });