Podman to work with docker mirrors

podman_mirror_docker.sh

# on client
cat << EOF >/etc/containers/registries.conf
unqualified-search-registries = ['docker.io']

[[registry]]
prefix = "docker.io"
insecure = true
location = "docker.io"
[[registry.mirror]]
insecure = true
location = "192.168.2.69:5000"
EOF

# on 192.168.2.69 server:
# generate config
docker/podman run -it --rm --entrypoint cat registry:2 /etc/docker/registry/config.yml > `pwd`/config.yml
# add proxy config:
cat <<EOF >> config.yml
proxy:
  remoteurl: https://registry-1.docker.io
EOF

# run proxy mirror
# with docker
docker run -d \
  -e REGISTRY_HTTP_ADDR=0.0.0.0:5000 \
  -v /home/ubuntu/imgs:/var/lib/registry \
  -v `pwd`/config.yml:/etc/docker/registry/config.yml \
  -p 5000:5000 \
  --name registry-test registry:2
# with podman
podman run -d \
  -e REGISTRY_HTTP_ADDR=0.0.0.0:5000 \
  -v /home/ubuntu/imgs2:/var/lib/registry \
  -v `pwd`/config.yml:/etc/docker/registry/config.yml \
  -p 5000:5000 \
  --name registry-podman registry:2