Gradle Docker plugin connection timed out - gradle

Question

I am trying to create and build an image by using bmuschko/gradle-docker-plugin. The Dockerfile is created but I can't seem to be able to build an image from it. I am on Centos 7.
Create the Dockerfile:
task createBaseImage(type: Dockerfile) {
destFile = project.file('docker/base/Dockerfile')
from 'java:8'
runCommand 'apt-get update'
runCommand 'apt-get -qq -y install python3 python3-dev python3-pip'
}
Build the image:
task buildBaseImage(type: DockerBuildImage) {
dependsOn createBaseImage
inputDir = createBaseImage.destFile.parentFile
tag = 'the/tag'
}
When running the buildBaseImage task ./gradlew buildBaseImage --info, the execution hangs and finally fails with:
org.apache.http.conn.ConnectTimeoutException: Connect to 192.168.59.103:2376 [/192.168.59.103] failed: Connection timed out
I suspect there's a problem with my docker closure which is copied from the examples:
docker {
url = 'http://192.168.59.103:2376'
registryCredentials {
url = 'https://index.docker.io/v1'
username = '${docker_user}'
password = '${docker_password}'
email = 'email#example.com'
}
}
I've tried different urls, ports etc. but the problem persists. Any ideas about what is causing this problem?

Answer 1

Worked around this by using a different Gradle plugin. The images can be built in a similar and simple fashion:
task buildBaseImage(type: Docker) {
baseImage 'java:8'
applicationName = "app-name"
tagVersion = 'latest'
runCommand "apt-get update"
runCommand "apt-get -qq -y install python3 python3-dev python3-pip"
}
And then pushed to Docker Hub via:
task pushBaseImage(type: Exec, dependsOn: 'buildBaseImage') {
executable 'docker'
args = ['push','-f', getGroup() + '/my-base']
}
Using force to skip the push confirmation.
docker push --help
-f, --force=false Push to public registry without confirmation
This was my way of working around the connection issues.
Here's the required configurations:
apply plugin: 'docker'
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'se.transmode.gradle:gradle-docker:1.2'
}
}
group = "myGroup"
docker {
maintainer 'Maintainer "maintainer#example.com"'
}