Unable to Change Docker Registry URL - docker

Question

I am new to Docker, so I am trying to learn and build a docker image for my Spring Boot application.
My Dockerfile currently is very basic. I will add to it, once I figure out more about it.
# AS <NAME> to name this stage as maven
FROM eclipse-temurin:11-jdk-alpine as jdk
FROM maven:3.8.4 as maven
My Docker info is:
Client:
Context: default
Debug Mode: false
Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 20.10.17-ce
Storage Driver: btrfs
Build Version: Btrfs v4.15
Library Version: 102
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 1
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux oci runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 10c12954828e7c7c9b6e0ea9b0c02b01407d3ae1
runc version: v1.1.4-0-ga916309fff0f
init version:
Security Options:
apparmor
seccomp
Profile: default
Kernel Version: 5.14.21-150400.24.28-default
Operating System: openSUSE Leap 15.4
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 9.714GiB
Name: localhost.localdomain
ID: CHSH:Q5ZQ:5MPU:X5MR:FG7M:IFV7:RG5Z:MKNO:KWG6:ZM4L:QX6E:QMNE
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Registry Mirrors:
https://MY_DOCKER_URL/
Live Restore Enabled: false
My /etc/docker/daemon.json file looks like this:
{
"log-level": "warn",
"log-driver": "json-file",
"log-opts": {
"max-size": "10m",
"max-file": "5"
},
"registry-mirrors": ["https://MY_DOCKER_URL/"]
}
I added the registry-mirror myself
My /usr/lib/systemd/system/docker.service looks like this:
[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.com
After=network.target lvm2-monitor.service SuSEfirewall2.service
[Service]
EnvironmentFile=/etc/sysconfig/docker
Environment=“HTTP_PROXY=MY_COMPANYS_PROXY”
Environment=“HTTPS_PROXY=MY_COMPANYS_PROXY”
Environment=“NO_PROXY=localhost,127.0.0.1”
# While Docker has support for socket activation (-H fd://), this is not
# enabled by default because enabling socket activation means that on boot your
# containers won't start until someone tries to administer the Docker daemon.
Type=notify
ExecStart=/usr/bin/dockerd --add-runtime oci=/usr/sbin/docker-runc $DOCKER_NETWORK_OPTIONS $DOCKER_OPTS
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=1048576
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this property.
TasksMax=infinity
# Set delegate yes so that systemd does not reset the cgroups of docker containers
# Only systemd 218 and above support this property.
Delegate=yes
# Kill only the docker process, not all processes in the cgroup.
KillMode=process
# Restart the docker process if it exits prematurely.
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
[Install]
WantedBy=multi-user.target
I did login with the command:
sudo docker login -u MY_USERNAME -p MY_PASSWORD MY_CORPORATE_REGISTRY
But when I do a docker pull, it still tries to fetch from the docker hub registry:
Sending build context to Docker daemon 547.3kB
Step 1/3 : FROM eclipse-temurin:11-jdk-alpine as jdk
Get "https://registry-1.docker.io/v2/": net/http: TLS handshake timeout
Any help on this would be really nice. I am struggling with this for two days!

Answer 1

You have to add
{
"registry-mirrors": ["<your-registry-url>"]
}
to your /etc/docker/daemon.json and restart the docker daemon.