fix: fix typo.

Author: liqiang-fit2cloud

.github/workflows/publish-to-dockerhub.yml

@@ -25,7 +25,7 @@ jobs:
             --build-arg BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ') \
             --build-arg VCS_REF=${GITHUB_SHA::8} \
             ${DOCKER_IMAGE_TAGS} .
-          sed -i '2i\VERSION = {TAG_NAME}' gotty/Makefile
+          sed -i '2i\VERSION = ${TAG_NAME}' gotty/Makefile
       - name: Set up Docker Buildx
         uses: crazy-max/ghaction-docker-buildx@v3
       - name: Docker Buildx (build)