Update docker.yml

Author: marcelmaatkamp

.github/workflows/docker.yml

@@ -28,6 +28,9 @@ jobs:
  registry: ghcr.io
  username: ${{ github.repository_owner }}
  password: ${{ secrets.GITHUB_TOKEN }}
+ - name: downcase REPO
+ run: |
+ echo "REPO=${GITHUB_REPOSITORY,,}" >>${GITHUB_ENV} 
  - name: Build and push docker containers
  uses: docker/build-push-action@v4
  with:
@@ -38,10 +41,10 @@ jobs:
  MKDOCS_MATERIAL_VERSION=${{ vars.MKDOCS_MATERIAL_VERSION }}
  push: true
  tags: |
- ${{ github.repository }}:${{ vars.MKDOCS_MATERIAL_VERSION }}
- ${{ github.repository }}:latest
- ghcr.io/${{ github.repository }}:${{ vars.MKDOCS_MATERIAL_VERSION }}
- ghcr.io/${{ github.repository }}:latest
+ ${REPO}:${{ vars.MKDOCS_MATERIAL_VERSION }}
+ ${REPO}:latest
+ ghcr.io/${REPO}:${{ vars.MKDOCS_MATERIAL_VERSION }}
+ ghcr.io/${REPO}:latest
  - name: Sync readme.md to docker hub
  uses: ms-jpq/sync-dockerhub-readme@v1
  with: