diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 1826d63..32cf303 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -36,7 +36,7 @@ jobs:
 
       - name: Build and push Docker image
         run: |
-          IMAGE=192.168.1.39:3000/${{ github.repository }}
+          IMAGE=192.168.1.39:3000/$(echo "${{ github.repository }}" | tr '[:upper:]' '[:lower:]')
           docker build -t ${IMAGE}:latest -t ${IMAGE}:${{ github.sha }} .
           docker push ${IMAGE}:latest
           docker push ${IMAGE}:${{ github.sha }}