docker private registry mirroring

docker private registry mirroring.sh

#PREPARE REGISTRY
#--------------------------------------

export REGISTRY_VERSION=2.4.0

# PULL REGISTRY
docker pull registry:${REGISTRY_VERSION}

# GENERATE CONFIG
docker run -it --rm --entrypoint cat registry:${REGISTRY_VERSION} /etc/docker/registry/config.yml > config.yml \
&& cat << EOF >> config.yml
proxy:
  remoteurl: https://registry-1.docker.io
EOF


# START REGISTRY
docker run -d --restart=always \
  -p 5000:5000 \
  --name v2-mirror \
  -v $(pwd)/config.yml:/etc/docker/registry/config.yml \
  registry:${REGISTRY_VERSION}


# test => 
# curl -I http://172.17.4.10:5000/v2/curl -I http://172.17.4.10:5000/v2/
# curl http://172.17.4.10:5000/v2/_catalog


# Then on the docker hosts

# SET DOCKER OPTS

# DIR=/etc/systemd/system/docker.service.d
# sudo mkdir -p $DIR && cat << EOF | sudo tee "${DIR}/10-docker-opts.conf"
# [Service]
# Environment="DOCKER_OPTS=--registry-mirror=${LOCAL_REGISTRY_ENDPOINT} --insecure-registry=${LOCAL_REGISTRY_ENDPOINT}"
# EOF