This is a prebuilt image of (meAmidos/dcind)[https://github.com/meAmidos/dcind] with Gradle 6.3 and JDK11 included. It uses Alpine 3.11 as the base image.
You can use this prebuilt image to invoke Docker in parent container from the child container. Mainly, it exist for use in Concourse CI builds.
Note that docker-lib.sh has bash dependencies, so it is important to use bash in your task.
Versions should follow the same tag template as Gradle (https://hub.docker.com/_/gradle).
For example, with Gradle 6.3 and JDK11 the tag should be: 6.3-jdk11
Docker Hub will automatically build the new version if the Git tag matching this template is pushed to the repository.
- name: integration
plan:
- aggregate:
- get: code
params: {depth: 1}
passed: [unit-tests]
trigger: true
- get: redis
params: {save: true}
- get: busybox
params: {save: true}
- task: Run integration tests
privileged: true
config:
platform: linux
image_resource:
type: docker-image
source:
repository: sgcomsysto/dcind-jdk11-gradle
inputs:
- name: code
- name: redis
- name: busybox
run:
path: bash
args:
- -exc
- |
source /docker-lib.sh
start_docker
# Strictly speaking, preloading of Docker images is not required.
# However, you might want to do this for a couple of reasons:
# - If the image comes from a private repository, it is much easier to let Concourse pull it,
# and then pass it through to the task.
# - When the image is passed to the task, Concourse can often get the image from its cache.
docker load -i redis/image
docker tag "$(cat redis/image-id)" "$(cat redis/repository):$(cat redis/tag)"
docker load -i busybox/image
docker tag "$(cat busybox/image-id)" "$(cat busybox/repository):$(cat busybox/tag)"
# This is just to visually check in the log that images have been loaded successfully
docker images
# Run the container with tests and its dependencies.
docker-compose -f code/example/integration.yml run tests
# Cleanup.
# Not sure if this is required.
# It's quite possible that Concourse is smart enough to clean up the Docker mess itself.
docker volume rm $(docker volume ls -q)