docker 其它说明

参数的作用顺序：

说明：在构造容器时，Dcokerfile文件有有CMD项，前台运行（daemon off;）还是后台运行（daemon on;）；
[root@localhost7B alpine]# docker run  -d  -it -p 80:80 alpine_ningx:test
[root@localhost7B alpine]# docker ps
CONTAINER ID   IMAGE               COMMAND                  CREATED              STATUS              PORTS                                        NAMES
06090a5ab3e2   alpine_ningx:test   "nginx -g 'daemon of…"   About a minute ago   Up About a minute   0.0.0.0:80->80/tcp, :::80->80/tcp, 443/tcp   infallible_swanson
[root@localhost7B alpine]# docker run  -d  -it -p 80:80 alpine_ningx:test

说明：容器没有运行， COMMAND 显示为sh,覆盖了"nginx -g 'daemon of…"
[root@localhost7B ubuntu]# docker run  -d  -it -p 80:80 alpine_ningx:test   sh
[root@localhost7B alpine]# docker ps
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
[root@localhost7B alpine]# docker ps  -a
CONTAINER ID   IMAGE               COMMAND                  CREATED             STATUS                      PORTS     NAMES
f6b4be689e06   alpine_ningx:test   "nginx sh"               9 seconds ago       Exited (1) 7 seconds ago              intelligent_bouman

正确的启动方式

docker run  -d  -it -p 80:80 --name nginx  alpine_ningx:test
docker exec  -it  nginx  sh
docker stop/start  nginx 

cat /etc/docker/daemon.json 
{
  "bip": "172.30.0.1/24",                                            #修改bridge网段
  "storage-driver": "overlay2",                                        #设置存储引擎类型
  "registry-mirrors": ["https://si7y70hh.mirror.aliyuncs.com"],        #设置docker 镜像加速器地址
   "dns" : [  "114.114.114.114", "119.29.29.29"]                    #设置容器DNS地址，用--dns参数优先级更高
}

修改bridge模式默认的网段方法1
[root@localhost7C ~]# cat  /lib/systemd/system/docker.service 
[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.com
After=network.target
Wants=docker-storage-setup.service
Requires=docker-cleanup.timer

[Service]
Type=notify
NotifyAccess=main
EnvironmentFile=-/run/containers/registries.conf
EnvironmentFile=-/etc/sysconfig/docker
EnvironmentFile=-/etc/sysconfig/docker-storage
EnvironmentFile=-/etc/sysconfig/docker-network
Environment=GOTRACEBACK=crash
Environment=DOCKER_HTTP_HOST_COMPAT=1
Environment=PATH=/usr/libexec/docker:/usr/bin:/usr/sbin
ExecStart=/usr/bin/dockerd-current \
          --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current \
          --default-runtime=docker-runc \
          --exec-opt native.cgroupdriver=systemd \
          --userland-proxy-path=/usr/libexec/docker/docker-proxy-current \
          --init-path=/usr/libexec/docker/docker-init-current \
          --seccomp-profile=/etc/docker/seccomp.json \
          --bip=10.100.0.1/24 \
          $OPTIONS \
          $DOCKER_STORAGE_OPTIONS \
          $DOCKER_NETWORK_OPTIONS \
          $ADD_REGISTRY \
          $BLOCK_REGISTRY \
          $INSECURE_REGISTRY \
      $REGISTRIES 
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=1048576
LimitNPROC=1048576
LimitCORE=infinity
TimeoutStartSec=0
Restart=on-abnormal
KillMode=process

[Install]
WantedBy=multi-user.target    


修改bridge网络配置方法2    
cat /etc/docker/daemon.json 
{
  "bip": "10.100.0.1/24",                                            #修改bridge网段
  "storage-driver": "overlay2",                                        #设置存储引擎类型
  "registry-mirrors": ["https://si7y70hh.mirror.aliyuncs.com"],        #设置docker 镜像加速器地址
   "dns" : [  "114.114.114.114", "119.29.29.29"]                    #设置容器DNS地址，用--dns参数优先级更高
}