Fix tag names

Author: jl-0

.github/workflows/docker-build.yml

@@ -34,9 +34,13 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Extract branch name
+      - name: Extract and sanitize branch name
         shell: bash
-        run: echo "BRANCH_NAME=${GITHUB_REF#refs/heads/}" >> $GITHUB_ENV
+        run: |
+          BRANCH_NAME=${GITHUB_REF#refs/heads/}
+          # Replace forward slashes with hyphens and remove any invalid characters
+          SANITIZED_BRANCH=$(echo "$BRANCH_NAME" | sed 's/[^a-zA-Z0-9._-]/-/g' | sed 's/^-//;s/-$//')
+          echo "BRANCH_NAME=$SANITIZED_BRANCH" >> $GITHUB_ENV
       
       - name: Build and push Docker image
         uses: docker/build-push-action@v5