Conda base image is not being pushed to docker hub

[RafalSkolasinski]

The seldonio/conda-ubi8 images are not being pushed to docker hub which leads to failing builds locally

make build_local
mkdir -p _python
cp ../../../version.txt version.txt
cp -r ../../../python _python
set -x && docker build -f Dockerfile.local --build-arg PYTHON_VERSION=3.7.10 --build-arg CONDA_VERSION=4.7.12  --build-arg BASE_IMAGE=docker.io/seldonio/conda-ubi8 --build-arg IMAGE_VERSION=1.10.0-dev -t docker.io/seldonio/seldon-core-s2i-python`echo -n 3.7.10 | cut -d. -f1-2 | sed 's/\.//g'`:1.10.0-dev .
++ echo -n 3.7.10
++ cut -d. -f1-2
++ sed 's/\.//g'
+ docker build -f Dockerfile.local --build-arg PYTHON_VERSION=3.7.10 --build-arg CONDA_VERSION=4.7.12 --build-arg BASE_IMAGE=docker.io/seldonio/conda-ubi8 --build-arg IMAGE_VERSION=1.10.0-dev -t docker.io/seldonio/seldon-core-s2i-python37:1.10.0-dev .
Sending build context to Docker daemon   1.39MB
Step 1/19 : ARG CONDA_VERSION
Step 2/19 : ARG BASE_IMAGE
Step 3/19 : ARG IMAGE_VERSION
Step 4/19 : FROM $BASE_IMAGE:$IMAGE_VERSION
manifest for seldonio/conda-ubi8:1.10.0-dev not found: manifest unknown: manifest unknown
make: *** [Makefile:34: build_local] Error 1