The configuration of "insecure-registries" in daemon.json does not take effect.

Inizia dal punto di ingresso di docker login e verifica come vengono interpretati l’impostazione insecure-registries di daemon.json e l’indirizzo del registro. Confronta la configurazione docker info riportata con il comando docker login e il comportamento HTTP previsto, quindi verifica il risultato con una riproduzione mirata verso l’indirizzo del registro indicato.

Description

I configured insecure-registries in /etc/docker/daemon.json, then executed systemctl daemon-reload and systemctl restart docker. On another server that can communicate with this one, when I use the command docker login 192.168.8.197, it returns an error:
docker login 192.168.8.197 Username: bububear Password: Error response from daemon: Get "https://192.168.8.197/v2/": dial tcp 192.168.8.197:443: connect: connection refused

Reproduce

docker login http://192.168.8.197
Username: bububear
Password:
Error response from daemon: Get "https://192.168.8.197/v2/": dial tcp 192.168.8.197:443: connect: connection refused

Expected behavior

When insecure-registries is correctly configured, it supports accessing the registry via HTTP.

docker version

Client: Docker Engine - Community
 Version:           28.0.1
 API version:       1.48
 Go version:        go1.23.6
 Git commit:        068a01e
 Built:             Wed Feb 26 10:41:12 2025
 OS/Arch:           linux/amd64
 Context:           default

Server: Docker Engine - Community
 Engine:
  Version:          28.0.1
  API version:      1.48 (minimum version 1.24)
  Go version:       go1.23.6
  Git commit:       bbd0a17
  Built:            Wed Feb 26 10:41:12 2025
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.7.25
  GitCommit:        bcc810d6b9066471b0b6fa75f557a15a1cbf31bb
 runc:
  Version:          1.2.4
  GitCommit:        v1.2.4-0-g6c52b3f
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

docker info

Client: Docker Engine - Community
 Version:    28.0.1
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.21.1
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.33.1
    Path:     /usr/libexec/docker/cli-plugins/docker-compose

Server:
 Containers: 12
  Running: 9
  Paused: 0
  Stopped: 3
 Images: 28
 Server Version: 28.0.1
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: bcc810d6b9066471b0b6fa75f557a15a1cbf31bb
 runc version: v1.2.4-0-g6c52b3f
 init version: de40ad0
 Security Options:
  apparmor
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 6.8.0-55-generic
 Operating System: Ubuntu 24.04.2 LTS
 OSType: linux
 Architecture: x86_64
 CPUs: 8
 Total Memory: 15.39GiB
 Name: sunshine
 ID: 505a143d-141b-4591-9985-6a3fcffdeaee
 Docker Root Dir: /var/lib/docker
 Debug Mode: true
  File Descriptors: 107
  Goroutines: 117
  System Time: 2025-03-14T18:01:32.172392303+08:00
  EventsListeners: 0
 HTTP Proxy: http://127.0.0.1:7890
 HTTPS Proxy: http://127.0.0.1:7890
 No Proxy: localhost,127.0.0.1,::1,registry.cluster.local
 Experimental: false
 Insecure Registries:
  192.168.8.197:80
  ::1/128
  127.0.0.0/8
 Registry Mirrors:
  https://docker.registry.cyou/
  https://docker-cf.registry.cyou/
  http://192.168.8.197/
  https://dockercf.jsdelivr.fyi/
  https://docker.jsdelivr.fyi/
  https://dockertest.jsdelivr.fyi/
  https://mirror.aliyuncs.com/
  https://dockerproxy.com/
  https://mirror.baidubce.com/
  https://docker.m.daocloud.io/
  https://docker.nju.edu.cn/
  https://docker.mirrors.sjtug.sjtu.edu.cn/
  https://docker.mirrors.ustc.edu.cn/
  https://mirror.iscas.ac.cn/
  https://docker.rainbond.cc/
  https://do.nark.eu.org/
  https://dc.j8.work/
  https://gst6rzl9.mirror.aliyuncs.com/
  https://registry.docker-cn.com/
  http://hub-mirror.c.163.com/
  http://mirrors.ustc.edu.cn/
  https://mirrors.tuna.tsinghua.edu.cn/
  http://mirrors.sohu.com/
 Live Restore Enabled: false

[DEPRECATION NOTICE]: API is accessible on http://0.0.0.0:2375 without encryption.
         Access to the remote API is equivalent to root access on the host. Refer
         to the 'Docker daemon attack surface' section in the documentation for
         more information: https://docs.docker.com/go/attack-surface/
In future versions this will be a hard failure preventing the daemon from starting! Learn more at: https://docs.docker.com/go/api-security/

Additional Info

No response