问Maven build适用于正在运行的Docker GUI，但不适用于二进制文件

EN

$ which docker
/usr/local/bin/docker

FROM openjdk:8-jre
MAINTAINER ...

COPY dist /dist/
ARG JAR_FILE
COPY target/${JAR_FILE} /target/app.jar
EXPOSE 8080
CMD ["java", "-jar", "/target/app.jar"]

$ mvn clean install
[INFO] Scanning for projects...
...
[WARNING] An attempt failed, will retry 1 more times
org.apache.maven.plugin.MojoExecutionException: Could not build image
...
Caused by: com.spotify.docker.client.exceptions.DockerException: java.util.concurrent.ExecutionException: com.spotify.docker.client.shaded.javax.ws.rs.ProcessingException: java.io.IOException: Connection refused
...
Caused by: java.util.concurrent.ExecutionException: com.spotify.docker.client.shaded.javax.ws.rs.ProcessingException: java.io.IOException: Connection refused
...
Caused by: com.spotify.docker.client.shaded.javax.ws.rs.ProcessingException: java.io.IOException: Connection refused
...
Caused by: java.io.IOException: Connection refused
...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 38.498 s
[INFO] Finished at: 2018-09-12T11:39:34+01:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.spotify:dockerfile-maven-plugin:1.4.4:build (default) on project econometer: Could not build image: java.util.concurrent.ExecutionException: com.spotify.docker.client.shaded.javax.ws.rs.ProcessingException: java.io.IOException: Connection refused -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException