🔧 chore(ci): update remote URL configuration in build workflow

- add REPO_URL environment variable for consistent repository URL usage
- update git remote add commands to use the new REPO_URL variable for clarity

.forgejo/workflows/build.yml

@@ -8,6 +8,7 @@ on:
 
 env:
   IMAGE_TAG: ${{ github.ref == 'refs/heads/dev' && 'dev' || 'latest' }}
+  REPO_URL: https://git.sky-net.it
 
 jobs:
   lint:
@@ -19,7 +20,7 @@ jobs:
         run: |
           apk add --no-cache git
           git init
-          git remote add origin ${{ github.server_url }}/${{ github.repository }}.git
+          git remote add origin ${{ env.REPO_URL }}/${{ github.repository }}.git
           git fetch --depth 1 origin ${{ github.ref }}
           git checkout FETCH_HEAD
 
@@ -38,7 +39,7 @@ jobs:
           apt-get update
           apt-get install -y git
           git init
-          git remote add origin ${{ github.server_url }}/${{ github.repository }}.git
+          git remote add origin ${{ env.REPO_URL }}/${{ github.repository }}.git
           git fetch --depth 1 origin ${{ github.ref }}
           git checkout FETCH_HEAD
 
@@ -105,7 +106,7 @@ jobs:
       - name: Manual Git Checkout
         run: |
           git init
-          git remote add origin http://$(getent hosts server | awk '{ print $1 }')/${{ github.repository }}.git
+          git remote add origin ${{ env.REPO_URL }}/${{ github.repository }}.git
           git fetch --depth 1 origin ${{ github.ref }}
           git checkout FETCH_HEAD
 
@@ -114,6 +115,7 @@ jobs:
 
       - name: Login to registry
         run: echo "${{ secrets.REG_TOKEN }}" | docker login "${{ secrets.REGISTRY }}" -u "${{ secrets.REG_USER }}" --password-stdin
+
       - name: Build image
         run: |
           docker buildx build --load \