Add package_name and branch_name variables to Docker image upload script

.gitea/workflows/build.yaml

@@ -31,6 +31,9 @@ jobs:
           docker build -t $package_name .                  
       - name: Upload Docker image to soaska.ru
         run: |
+          package_name=$(basename ${{ github.repository | lower }})
+          branch_name=$(git rev-parse --abbrev-ref HEAD | lower)
+          
           docker login -u ${{ secrets.username }} -p ${{ secrets.password }} soaska.ru
           docker tag $package_name soaska.ru/${{ secrets.username }}/$package_name:$branch_name
           docker tag $package_name soaska.ru/${{ secrets.username }}/$package_name:latest