Merge pull request ome#56 from sbesson/prefix

Also set the Docker namespace on tags

Author: sbesson

.github/workflows/main.yml

@@ -19,13 +19,13 @@ jobs:
     if: startsWith(github.ref, 'refs/tags')
     runs-on: ubuntu-latest
     env:
-      name: omero-server
+      name: openmicroscopy/omero-server
     steps:
       - name: Get prefix
         id: getprefix
         run: |
           if [ ! -z ${{ env.name }} ]; then
-            echo "::set-output name=prefix::${{ github.actor }}/${{ env.name }}:"
+            echo "::set-output name=prefix::${{ env.name }}:"
           else
             echo "::set-output name=prefix::${{ github.repository }}:"
           fi