maven构建docker镜像异常

由于没有配置ip+2375端口，导致每次跑的时候，都是连接本地的，一直会报错

[ERROR] Failed to execute goal com.spotify:docker-maven-plugin:0.4.5:build (server) on project web-service: Exception caught: java.util.concurrent.ExecutionException: com.spotify.docker.client.shaded.javax.ws.rs.ProcessingException: org.apache.http.conn.HttpHostConnectException: Connect to localhost:2375 [localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1, localhost/fe80:0:0:0:0:0:0:1%1] failed: Connection refused -> [Help 1]

研究了几个小时，终于解决了。

客户端：

加上  -H tcp://0.0.0.0:2375

[root@topcheer system]# cat docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
BindsTo=containerd.service
After=network-online.target firewalld.service containerd.service
Wants=network-online.target
Requires=docker.socket

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375  -H fd:// --containerd=/run/containerd/containerd.sock
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

# Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
# Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
# this option work for either version of systemd.
StartLimitInterval=60s

# 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=infinity
LimitNPROC=infinity
LimitCORE=infinity

# Comment TasksMax if your systemd version does not support it.
# Only systemd 226 and above support this option.
TasksMax=infinity

# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes

# kill only the docker process, not all processes in the cgroup
KillMode=process

[Install]
WantedBy=multi-user.target
[root@topcheer system]# pwd
/usr/lib/systemd/system
[root@topcheer system]#

重启docker,会发现2375起起来了

[root@topcheer system]# lsof -i:2375
COMMAND   PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
dockerd 21337 root    7u  IPv6 128286      0t0  TCP *:2375 (LISTEN)
[root@topcheer system]#

客户端：

2种选择

要不配置环境变量：

 要不在pom.xml添加

<dockerHost>http://192.168.180.105:2375</dockerHost>

测试：

[INFO] Pushing 192.168.180.105:1180/topcheer/docker:1.0.2
The push refers to repository [192.168.180.105:1180/topcheer/docker]
75db466d4814: Preparing 
82128b555bad: Preparing 
35c20f26d188: Preparing 
c3fe59dd9556: Preparing 
6ed1a81ba5b6: Preparing 
a3483ce177ce: Preparing 
ce6c8756685b: Preparing 
30339f20ced0: Preparing 
0eb22bfb707d: Preparing 
a2ae92ffcd29: Preparing 

a3483ce177ce: Waiting 

ce6c8756685b: Waiting 

30339f20ced0: Waiting 

0eb22bfb707d: Waiting 

a2ae92ffcd29: Waiting 

35c20f26d188: Layer already exists 

c3fe59dd9556: Layer already exists 

6ed1a81ba5b6: Layer already exists 

75db466d4814: Layer already exists 

82128b555bad: Layer already exists 

0eb22bfb707d: Layer already exists 

a3483ce177ce: Layer already exists 

a2ae92ffcd29: Layer already exists 

ce6c8756685b: Layer already exists 

30339f20ced0: Layer already exists 
1.0.2: digest: sha256:65b55efa410146d044fa6feba6d9456f13f601f83a2ef73c91e0b0b7a8efc94c size: 2424
null: null 
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 40.289 s
[INFO] Finished at: 2019-11-05T18:43:23+08:00
[INFO] ----------------------------------------------