Fix parsing of Docker tag

.gitea/workflows/docker.yml

@@ -29,11 +29,11 @@ jobs:
       - name: Extract tag for kaniko action
         id: tag
         env:
-          TAG: ${{ steps.meta.outputs.tags[0] }}
+          TAG: ${{ steps.meta.outputs.tags }}
         run: |
+          echo "TAG=$TAG"
           echo "::set-output name=tag::${TAG##*:}"
 
-
       - name: Build Docker image with kaniko
         uses: https://code.thetadev.de/ThetaDev/action-kaniko@dbb8da86cf2d498dde8ec1b3be967ceda17a21ff
         with:
@@ -43,10 +43,10 @@ jobs:
           password: ${{ secrets.DOCKER_PASSWORD }}
           tag: ${{ steps.tag.outputs.tag }}
           platforms: linux/amd64
-          tag_with_latest: ${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
+          tag_with_latest: ${{ gitea.ref == format('refs/heads/{0}', gitea.event.repository.default_branch) }}
 
       - name: Trigger redeployment
-        if: gitea.ref == 'refs/heads/main'
+        if: gitea.ref == format('refs/heads/{0}', gitea.event.repository.default_branch)
         env:
           UPDATE_URL: ${{ secrets.UPDATE_URL }}
           UPDATE_TOKEN: ${{ secrets.UPDATE_TOKEN }}