Create a docker image

gitlab_docker_image_create.md

The "magical" whale.

Creating Docker images for GitLab CI

1. Remove existing image, if needed. See "Misc commands" for details.
2. Build the new image docker build -t app .

To run a local image

1. Find the image ID docker images
2. docker run -t -d --name my_app <image ID>
3. See below for information on how to test the image.

Tag the image

1. docker tag app registry.gitlab.com/org/repo/php:latest
2. Push the image to GitLab container repository docker push registry.gitlab.com/org/repo/php

Testing the image

1. Start a container, named "my_app" docker run -t -d --name my_app app
2. Open the command line within the container docker exec -it my_app bash
3. Stop the container docker stop my_app app

Misc commands

• View available images docker images
• Remove an image docker rmi <IMAGE_ID>
• Remove a container docker rm <CONTAINER_ID or CONTAINER_NAME>