fix: use correct DEB signing script in full-build workflow

The build-deb job was calling 'sign_deb.sh' which does not exist.
The correct script is 'sign_deb_container.sh' used in release.yml.

Changes:
- Use sign_deb_container.sh instead of sign_deb.sh
- Add GPG_KEY_ID environment variable (required by the script)
- Pass distribution parameter to signing script
- Add success message after signing

This fixes DEB package signing failures in full-build workflow.

Author: SckyzO

.github/workflows/full-build.yml

@@ -535,9 +535,11 @@ jobs:
         env:
           GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
           GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          GPG_KEY_ID: ${{ secrets.GPG_KEY_ID }}
         run: |
           exporter="${{ matrix.exporter }}"
-          build_dir="build/$exporter-${{ matrix.arch }}-${{ matrix.dist }}"
+          dist="${{ matrix.dist }}"
+          build_dir="build/$exporter-${{ matrix.arch }}-$dist"
 
           deb_file=$(find "$build_dir/debs" -name "*.deb" | head -1)
           if [ -z "$deb_file" ]; then
@@ -546,8 +548,9 @@ jobs:
           fi
 
           echo "::group::🔐 Signing DEB"
-          chmod +x core/scripts/sign_deb.sh
-          ./core/scripts/sign_deb.sh "$deb_file" "$GPG_PRIVATE_KEY" "$GPG_PASSPHRASE"
+          chmod +x core/scripts/sign_deb_container.sh
+          ./core/scripts/sign_deb_container.sh "$deb_file" "$GPG_PRIVATE_KEY" "$GPG_PASSPHRASE" "$GPG_KEY_ID" "$dist"
+          echo "✓ DEB signed successfully"
           echo "::endgroup::"
 
       - name: ⬆️  Upload to GitHub Releases