Gpu runner space (#1920)

* Update publish-docker-gpu.yaml and publish-docker.yaml, remove docker rmi

Author: smathermather

.github/workflows/publish-docker-gpu.yaml

@@ -27,7 +27,6 @@ jobs:
       run: |
         sudo swapoff -a
         sudo rm -f /swapfile
-        docker rmi $(docker image ls -aq)
     - name: Build and push Docker image
       id: docker_build
       uses: docker/build-push-action@v2

.github/workflows/publish-docker.yaml

@@ -39,7 +39,6 @@ jobs:
       run: |
         sudo swapoff -a
         sudo rm -f /swapfile
-        docker rmi $(docker image ls -aq)
     - name: Build and push Docker image
       id: docker_build
       uses: docker/build-push-action@v2