diff --git a/.gitea/workflows/docker.yml b/.gitea/workflows/docker.yml
index 8a127ab..7f18dc5 100644
--- a/.gitea/workflows/docker.yml
+++ b/.gitea/workflows/docker.yml
@@ -9,6 +9,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Normalize repo name
+        run: |
+          REPOSITORY_LC=$(echo "${{ gitea.repository }}" | tr '[:upper:]' '[:lower:]')
+          echo "REPOSITORY_LC=REPOSITORY_LC" >> $GITHUB_ENV
       - uses: actions/checkout@v4
 
       - name: Login to Registry
@@ -23,17 +27,17 @@ jobs:
           REGESTRY: eiche:3000
         run: |
           # Build the image with the commit hash tag
-          docker build -t ${REGISTRY}/${{ gitea.repository }}:${GITHUB_RUN_NUMBER} .
+          docker build -t ${REGISTRY}/${REPOSITORY_LC}:${GITHUB_RUN_NUMBER} .
 
           # Tag the same image as "latest"
-          docker tag ${REGISTRY}/${{ gitea.repository }}:${GITHUB_RUN_NUMBER} ${REGISTRY}/${{ gitea.repository }}:latest
+          docker tag ${REGISTRY}/${REPOSITORY_LC}:${GITHUB_RUN_NUMBER} ${REGISTRY}/${REPOSITORY_LC}:latest
 
       - name: Push Docker Images
         env:
           REGESTRY: eiche:3000
         run: |
-          docker push ${REGISTRY}/${{ gitea.repository }}:${GITHUB_RUN_NUMBER}
-          docker push ${REGISTRY}/${{ gitea.repository }}:latest
+          docker push ${REGISTRY}/${REPOSITORY_LC}:${GITHUB_RUN_NUMBER}
+          docker push ${REGISTRY}/${REPOSITORY_LC}:latest
 
       - name: Log out from registry
         if: always()