fix sign-step for version-tags

.gitea/workflows/docker-builder.yml

@@ -64,21 +64,30 @@ jobs:
           fi
 
       - name: Detect version
+        id: detect_version
         run: |
+          echo "== Detect version =="
+          # Prüfen, ob wir auf einem Tag oder main-Branch sind
           if [ "$GITHUB_REF_TYPE" = "tag" ]; then
             VERSION="$GITHUB_REF_NAME"
-            CLEAN_VERSION="${VERSION#v}"
+            CLEAN_VERSION="${VERSION#v}"  # entfernt führendes 'v'
             IS_TAG=true
           else
-            VERSION="edge"
-            CLEAN_VERSION="edge"
+            VERSION="main"
+            CLEAN_VERSION="main"
             IS_TAG=false
           fi
 
+          echo "VERSION=$VERSION"
+          echo "CLEAN_VERSION=$CLEAN_VERSION"
+          echo "IS_TAG=$IS_TAG"
+
+          # Env für alle weiteren Steps exportieren
           echo "VERSION=$VERSION" >> $GITHUB_ENV
           echo "CLEAN_VERSION=$CLEAN_VERSION" >> $GITHUB_ENV
           echo "IS_TAG=$IS_TAG" >> $GITHUB_ENV
 
+
       - name: Set dynamic variables and check Dockerfiles
         id: check_files
         run: |
@@ -242,4 +251,6 @@ jobs:
       - name: Sign image
         if: env.IS_TAG == 'true'
         run: |
+          echo "Signing image ${IMAGE_NAME}:${VERSION}"
           cosign sign --key ${{ secrets.COSIGN_KEY }} ${IMAGE_NAME}:${VERSION}
+