feat(env): add environment variables for site URL and analytics domain

- Introduced .env.example file to define VITE_SITE_URL and VITE_ANALYTICS_DOMAIN.
- Updated Dockerfile to accept new build arguments for site URL and analytics domain.
- Modified production and staging build workflows to utilize the new environment variables.
- Updated VitePress configuration to dynamically set the hostname and meta tags based on the environment variables.

.github/workflows/production-build.yml

@@ -9,6 +9,7 @@ env:
   GITHUB_REGISTRY: ghcr.io
   IMAGE_NAME: coollabsio/coolify-docs
   VITE_ANALYTICS_DOMAIN: coolify.io/docs
+  VITE_SITE_URL: https://coolify.io/docs/
 
 jobs:
   build:
@@ -50,6 +51,9 @@ jobs:
           context: .
           file: Dockerfile
           platforms: linux/arm64
+          build-args: |
+            VITE_ANALYTICS_DOMAIN=${{ env.VITE_ANALYTICS_DOMAIN }}
+            VITE_SITE_URL=${{ env.VITE_SITE_URL }}
           push: true
           cache-from: type=gha,scope=${{ github.workflow }}
           cache-to: type=gha,mode=max,scope=${{ github.workflow }}

.github/workflows/staging-build.yml

@@ -8,6 +8,8 @@ on:
 env:
   GITHUB_REGISTRY: ghcr.io
   IMAGE_NAME: coollabsio/coolify-docs
+  VITE_ANALYTICS_DOMAIN: next.coolify.io/docs
+  VITE_SITE_URL: https://next.coolify.io/docs/
 
 jobs:
   build:
@@ -50,7 +52,8 @@ jobs:
           file: Dockerfile
           platforms: linux/arm64
           build-args: |
-            VITE_ANALYTICS_DOMAIN=next.coolify.io/docs
+            VITE_ANALYTICS_DOMAIN=${{ env.VITE_ANALYTICS_DOMAIN }}
+            VITE_SITE_URL=${{ env.VITE_SITE_URL }}
           push: true
           cache-from: type=gha,scope=${{ github.workflow }}
           cache-to: type=gha,mode=max,scope=${{ github.workflow }}