update to skip docker hub when nightly

.github/workflows/nightly.yml

@@ -91,13 +91,6 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Login to Docker Hub
-        uses: docker/login-action@v3
-        with:
-          registry: docker.io
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v6
         with:

.goreleaser.yaml

@@ -116,7 +116,7 @@ dockers_v2:
       - picoclaw
     images:
       - "ghcr.io/{{ .Env.GITHUB_REPOSITORY_OWNER }}/picoclaw"
-      - "docker.io/{{ .Env.DOCKERHUB_IMAGE_NAME }}"
+      - '{{ if not (isEnvSet "NIGHTLY_BUILD") }}docker.io/{{ .Env.DOCKERHUB_IMAGE_NAME }}{{ end }}'
     tags:
       - "{{ .Tag }}"
       - '{{ if isEnvSet "NIGHTLY_BUILD" }}nightly{{ else }}latest{{ end }}'