Require vars.DOCKER_REPOSITORY to publish image (#7400)

To allow user arikfr to publish images to redash/redash and redash/preview.
Only use vars.DOCKER_USER and secrets.DOCKER_PASSWORD for authorization.

Author: eradman

.github/workflows/preview-image.yml

@@ -32,6 +32,9 @@ jobs:
           elif [[ "${{ secrets.DOCKER_PASS }}" == '' ]]; then
             echo 'Docker password is empty. Skipping build+push'
             echo skip=true >> "$GITHUB_OUTPUT"
+          elif [[ "${{ vars.DOCKER_REPOSITORY }}" == '' ]]; then
+            echo 'Docker repository is empty. Skipping build+push'
+            echo skip=true >> "$GITHUB_OUTPUT"
           else
             echo 'Docker user and password are set and branch is `master`.'
             echo 'Building + pushing `preview` image.'
@@ -169,14 +172,14 @@ jobs:
         if: ${{ github.event.inputs.dockerRepository == 'preview' || !github.event.workflow_run }}
         working-directory: ${{ runner.temp }}/digests
         run: |
-          docker buildx imagetools create -t ${{ vars.DOCKER_USER }}/redash:preview \
-            $(printf '${{ vars.DOCKER_USER }}/redash:preview@sha256:%s ' *)
-          docker buildx imagetools create -t ${{ vars.DOCKER_USER }}/preview:${{ needs.build-docker-image.outputs.VERSION_TAG }} \
-            $(printf '${{ vars.DOCKER_USER }}/preview:${{ needs.build-docker-image.outputs.VERSION_TAG }}@sha256:%s ' *)
+          docker buildx imagetools create -t ${{ vars.DOCKER_REPOSITORY }}/redash:preview \
+            $(printf '${{ vars.DOCKER_REPOSITORY }}/redash:preview@sha256:%s ' *)
+          docker buildx imagetools create -t ${{ vars.DOCKER_REPOSITORY }}/preview:${{ needs.build-docker-image.outputs.VERSION_TAG }} \
+            $(printf '${{ vars.DOCKER_REPOSITORY }}/preview:${{ needs.build-docker-image.outputs.VERSION_TAG }}@sha256:%s ' *)
 
       - name: Create and push manifest for the release image
         if: ${{ github.event.inputs.dockerRepository == 'redash' }}
         working-directory: ${{ runner.temp }}/digests
         run: |
-          docker buildx imagetools create -t ${{ vars.DOCKER_USER }}/redash:${{ needs.build-docker-image.outputs.VERSION_TAG }} \
-            $(printf '${{ vars.DOCKER_USER }}/redash:${{ needs.build-docker-image.outputs.VERSION_TAG }}@sha256:%s ' *)
+          docker buildx imagetools create -t ${{ vars.DOCKER_REPOSITORY }}/redash:${{ needs.build-docker-image.outputs.VERSION_TAG }} \
+            $(printf '${{ vars.DOCKER_REPOSITORY }}/redash:${{ needs.build-docker-image.outputs.VERSION_TAG }}@sha256:%s ' *)