Maintaining a Docker Image from Docksal Image

While Docksal provides Behat in the CLI, some software projects, such as Acquia BLT, may expect a different structure than the Docksal default. Here are the steps that can be taken to build an image:

  1. Create image project, test and verify it worked as expected

    FROM docksal/cli:2-php7.2
    RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
        DEBIAN_FRONTEND=noninteractive apt-get -y --force-yes --no-install-recommends install \
        default-jre \
        lsof \
        # Cleanup
        && DEBIAN_FRONTEND=noninteractive apt-get clean && \
        rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  2. Create an Automated Build on Docker Hub with a link to the repo where the image definition is maintained, and setup the build to trigger whenever docksal/cli is updated.

  3. Update docksal.yml to pull docker-user/blt-cli image as opposed to docksal/cli:

    version: "2.1"
        image: docker-user/blt-cli
  4. Run fin up. The project will pull the image directly from Docker Hub.

When the image is updated, you will need to pull the latest changes from Docker Hub with fin docker pull <image name>:<tag>.