refactor: streamline git clone and docker build steps in workflow

.gitea/workflows/build-and-push.yaml

@@ -11,19 +11,21 @@ jobs:
     steps:
       - name: Clone repository
         run: |
-          # Configure git to use the token
-          git config --global credential.helper store
-          echo "https://${{ gitea.actor }}:${{ secrets.GITEATOKEN }}@${{ gitea.server_url }}" > ~/.git-credentials
-          
-          # Clone without credentials in URL
-          git clone ${{ gitea.server_url }}/${{ gitea.repository }}.git .
+          git clone https://${{ gitea.actor }}:${{ secrets.GITEATOKEN }}@${{ gitea.server_url }}/${{ gitea.repository }}.git .
           git checkout ${{ gitea.sha }}
-          
-          # Clean up credentials
-          rm ~/.git-credentials
       
       - name: Build and push
         run: |
-          echo "${{ secrets.GITEATOKEN }}" | docker login ${{ gitea.server_url }} -u ${{ gitea.actor }} --password-stdin
-          docker build -t ${{ gitea.server_url }}/${{ gitea.repository_owner }}/hello-gitea:latest .
-          docker push ${{ gitea.server_url }}/${{ gitea.repository_owner }}/hello-gitea:latest
+          # Login to registry
+          echo "${{ secrets.GITEATOKEN }}" | docker login "${{ gitea.server_url }}" -u "${{ gitea.actor }}" --password-stdin
+          
+          # Build with correct image format (no https://)
+          # Format: registry-host/owner/image:tag
+          IMAGE_NAME="git.eurekin.pl/${{ gitea.repository_owner }}/hello-gitea"
+          
+          # Ensure lowercase
+          IMAGE_NAME=$(echo "$IMAGE_NAME" | tr '[:upper:]' '[:lower:]')
+          
+          echo "Building image: $IMAGE_NAME:latest"
+          docker build -t "${IMAGE_NAME}:latest" .
+          docker push "${IMAGE_NAME}:latest"