Lowercase repo name in docker workflow, again

Author: Lissy93

.github/workflows/docker.yml

@@ -22,7 +22,6 @@ on:
 
 env:
   REPO_NAME: ${{ github.repository }}
-  REPO_LOWER: ${{ github.repository_owner }}/networking-toolbox
 
 jobs:
   build:
@@ -47,22 +46,24 @@ jobs:
         id: tags
         run: |
           TAGS=""
+          REPO_LOWER=$(echo "${{ env.REPO_NAME }}" | tr '[:upper:]' '[:lower:]')
 
           if [[ "${{ github.event_name }}" == "workflow_dispatch" && -n "${{ inputs.tag }}" ]]; then
             # Manual dispatch with custom tag
             TAG="${{ inputs.tag }}"
-            TAGS="docker.io/${{ env.REPO_LOWER }}:${TAG},ghcr.io/${{ env.REPO_LOWER }}:${TAG}"
+            TAGS="docker.io/${REPO_LOWER}:${TAG},ghcr.io/${REPO_LOWER}:${TAG}"
           elif [[ "${{ github.ref_type }}" == "tag" ]]; then
             # Git tag push
             TAG="${{ github.ref_name }}"
             TAG="${TAG#v}"  # Remove v prefix
-            TAGS="docker.io/${{ env.REPO_LOWER }}:${TAG},ghcr.io/${{ env.REPO_LOWER }}:${TAG}"
+            TAGS="docker.io/${REPO_LOWER}:${TAG},ghcr.io/${REPO_LOWER}:${TAG}"
           elif [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
             # Main branch push
-            TAGS="docker.io/${{ env.REPO_LOWER }}:latest,ghcr.io/${{ env.REPO_LOWER }}:latest"
+            TAGS="docker.io/${REPO_LOWER}:latest,ghcr.io/${REPO_LOWER}:latest"
           fi
 
           echo "tags=${TAGS}" >> $GITHUB_OUTPUT
+          echo "repo_lower=${REPO_LOWER}" >> $GITHUB_OUTPUT
           echo "Publishing tags: ${TAGS}"
 
       - name: 🔑 Login to Docker Hub
@@ -84,7 +85,7 @@ jobs:
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ghcr.io/${{ env.REPO_LOWER }}
+          images: ghcr.io/${{ steps.tags.outputs.repo_lower }}
           tags: |
             type=raw,value=${{ steps.tags.outputs.tags }}
           labels: |