fix workflows for multiple branches

.gitea/workflows/build-container-backend.yaml

@@ -12,7 +12,7 @@ jobs:
           git init
           git remote add gitea http://10.1.1.1:3000/hasslesstech/sdlc-project
           git fetch gitea
-          git checkout gitea/master
+          git checkout ${{ gitea.ref_name }}
       - name: Build docker image
         run: docker build backend/ -f backend/Dockerfile-x86_64 -t 10.5.1.5:5000/sdlc/x86_64
       - name: Push docker image to registry

.gitea/workflows/test-backend.yaml

@@ -13,7 +13,7 @@ jobs:
           git init
           git remote add gitea http://10.1.1.1:3000/hasslesstech/sdlc-project
           git fetch gitea
-          git checkout gitea/master
+          git checkout ${{ gitea.ref_name }}
       - name: Deploy testing environment
         shell: sh
         run: docker-compose -f backend/docker-compose-x86_64.yaml up -d --force-recreate