make owner name lower

.github/workflows/docker.yaml

@@ -43,21 +43,31 @@ jobs:
     needs: 
       - Clippy
     runs-on: ubuntu-latest
+    env: 
+      repo: ${{ github.repository }}
+      owner: ${{ github.repository_owner }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
+
+      - name: Convert to lowercase
+        id: c2l
+        run: | 
+          INPUT=${{ env.repo }}; echo "l_repo=${INPUT,,}">>${GITHUB_OUTPUT}
+          INPUT=${{ env.owner }}; echo "l_owner=${INPUT,,}">>${GITHUB_OUTPUT}
+
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v1
         with:
           registry: ghcr.io
-          username: ${{ github.actor }}
+          username: ${{steps.c2l.outputs.l_owner}}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and push Docker image
         uses: docker/build-push-action@v2
         with:
           context: .
           file: Dockerfile
           push: true
-          tags: ghcr.io/${{ github.repository }}:latest
+          tags: ghcr.io/${{steps.c2l.outputs.l_repo}}:latest