add branch name

Author: iljarotar

.github/workflows/docker.yaml

@@ -9,6 +9,7 @@ on:
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
+  BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
 
 jobs:
   test:
@@ -60,4 +61,4 @@ jobs:
         with:
           context: .
           push: true
-          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ (env.BRANCH_NAME == 'main' && 'latest') || env.BRANCH_NAME }}
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.BRANCH_NAME == 'main' && 'latest' || env.BRANCH_NAME }}