Don't tag ECR with the version. (#1660)

Co-authored-by: Julio Martinez <julio@tensorflow.ai>

Author: j3m7

.github/workflows/build_ecr_image.yaml

@@ -53,6 +53,6 @@ jobs:
         uses: aws-actions/amazon-ecr-login@v2
 
       - run: |
-          docker buildx build --platform=linux/amd64 --push . -t ${{ steps.login-ecr.outputs.registry }}/indexify-server:${{ github.sha }} -t ${{ steps.login-ecr.outputs.registry }}/indexify-server:latest -t ${{ steps.login-ecr.outputs.registry }}/indexify-server:$VERSION_TAG -f dockerfiles/Dockerfile.local
+          docker buildx build --platform=linux/amd64 --push . -t ${{ steps.login-ecr.outputs.registry }}/indexify-server:${{ github.sha }} -t ${{ steps.login-ecr.outputs.registry }}/indexify-server:latest -f dockerfiles/Dockerfile.local
         env:
-          VERSION_TAG: ${{ inputs.version }}
+          VERSION_TAG: ${{ inputs.version }}