Unable to build kserve dev image

[yeahdongcn]

🐛 Describe the bug

Docker Image Dev Build step failed in following this doc serve/kubernetes/kserve/README.md.

DOCKER_BUILDKIT=1 docker build -f Dockerfile.dev -t pytorch/torchserve-kfs:latest-dev .

Error logs

❯ DOCKER_BUILDKIT=1 docker build -f Dockerfile.dev -t pytorch/torchserve-kfs:latest-dev .
[+] Building 2.0s (7/14)                                                                                                                               
 => [internal] load build definition from Dockerfile.dev                                                                                          0.0s
 => => transferring dockerfile: 42B                                                                                                               0.0s
 => [internal] load .dockerignore                                                                                                                 0.0s
 => => transferring context: 2B                                                                                                                   0.0s
 => resolve image config for docker.io/docker/dockerfile:experimental                                                                             0.0s
 => CACHED docker-image://docker.io/docker/dockerfile:experimental                                                                                0.0s
 => [internal] load metadata for docker.io/library/ubuntu:20.04                                                                                   1.5s
 => CACHED [compile-image 1/6] FROM docker.io/library/ubuntu:20.04@sha256:0e0402cd13f68137edb0266e1d2c682f217814420f2d43d300ed8f65479b14fb        0.0s
 => ERROR [compile-image 2/6] RUN apt-key del 7fa2af80                                                                                            0.3s
------
 > [compile-image 2/6] RUN apt-key del 7fa2af80:
#7 0.246 E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation
------
executor failed running [/bin/sh -c apt-key del 7fa2af80]: exit code: 255

Installation instructions

N/A

Model Packaing

N/A

config.properties

No response

Versions

master branch

Repro instructions

cd kubernetes/kserve
./build_image.sh -g
DOCKER_BUILDKIT=1 docker build -f Dockerfile.dev -t pytorch/torchserve-kfs:latest-dev .

Possible Solution

No response