How to add insecure registry to Docker on CentOS using shell script - docker

Question

I have a docker 18.03.1-ce running on CentOS 7. I am trying to add another insecure registry to it.
docker info
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 18.03.1-ce
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 773c489c9c1b21a6d78b5c538cd395416ec50f88
runc version: 4fc53a81fb7c994640722ac585fa9ca548971871
init version: 949e6fa
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-514.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 7.639GiB
Name: ecs-cicd-0634.novalocal
ID: RGQ5:HMFO:NV2S:VXZG:U3RO:NKQ2:2BMT:XGMX:O6L7:SSWU:TCXV:5BVT
Docker Root Dir: /data/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
registry.titan.languoguang.com:5000
127.0.0.0/8
Live Restore Enabled: false
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
I just want to add another insecure registry to Docker, something like
registry-cbu.languoguang.com
Because my docker environment is a random docker environment, so i can't ssh The docker environment to modify the /etc/docker/daemon.json file when i use it in CI pipeline.
Add Insecure Registry to Docker
How to add my own insecure registry to Docker using shell script, thanks.

Answer 1

use jp merge two json files, it works for me.
# install jp
yum install epel-release -y
yum install jq -y
jq --version
# add registry-cbu.languoguang.com
cat /etc/docker/daemon.json
jq -s '.[0]."insecure-registries"=([.[]."insecure-registries"]|flatten)|.[0]' /etc/docker/daemon.json $PWD/ci/daemon.json > /etc/docker/daemon.extension.json
mv -f /etc/docker/daemon.extension.json /etc/docker/daemon.json
cat /etc/docker/daemon.json
echo "restart docker..."
sudo systemctl daemon-reload
sudo systemctl restart docker