ci: remove docker build dir

Signed-off-by: Alexander Trost <galexrt@googlemail.com>

Author: galexrt

.github/workflows/build_release.yml

@@ -34,7 +34,6 @@ jobs:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
           tag_names: true
-          workdir: ${{ github.workspace }}
       - name: Build and push to Quay.io
         uses: elgohr/Publish-Docker-Github-Action@master
         with:
@@ -43,4 +42,3 @@ jobs:
           password: ${{ secrets.QUAYIO_PASSWORD }}
           registry: quay.io
           tag_names: true
-          workdir: ${{ github.workspace }}