use git describe to find latest tag

.github/workflows/ghcr_deploy.yml

@@ -194,6 +194,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           ref: ${{ github.event.inputs.commit_hash }}
+          fetch-depth: 0
 
       - name: Log in to the Container registry
         uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
@@ -205,12 +206,17 @@ jobs:
       - name: lowercase github.repository_owner
         run: |
           echo "REPO_OWNER=`echo ${{github.repository_owner}} | tr '[:upper:]' '[:lower:]'`" >>${GITHUB_ENV}
-
+    
       - name: Get LiteLLM Latest Tag
         id: current_app_tag
-        uses: WyriHaximus/github-action-get-previous-tag@v1.3.0
-        env:
-          CHART_NAME: ${{ env.APP_NAME }}
+        shell: bash
+        run: |
+          LATEST_TAG=$(git describe --tags --exclude "*dev*" --abbrev=0)
+          if [ -z "${LATEST_TAG}" ]; then
+            echo "latest_tag=latest" | tee -a $GITHUB_OUTPUT
+          else
+            echo "latest_tag=${LATEST_TAG}" | tee -a $GITHUB_OUTPUT
+          fi
 
       - name: Get last published chart version
         id: current_version
@@ -238,7 +244,7 @@ jobs:
           name: ${{ env.CHART_NAME }}
           repository: ${{ env.REPO_OWNER }}
           tag: ${{ github.event.inputs.chartVersion || steps.bump_version.outputs.next-version || '0.1.0' }}
-          app_version: ${{ steps.current_app_tag.outputs.tag || 'latest' }}
+          app_version: ${{ steps.current_app_tag.outputs.latest_tag || 'latest' }}
           path: deploy/charts/${{ env.CHART_NAME }}
           registry: ${{ env.REGISTRY }}
           registry_username: ${{ github.actor }}