What is an image. The image keyword is the name of the Docker image the Docker executor uses to run CI/CD jobs. By default, the executor pulls images from Docker Hub. However, you can configure the registry location in the gitlab-runner/config. toml file.
One may also ask, does Docker compose pull image?
Pulls an image associated with a service defined in a docker-compose. yml or docker-stack. yml file, but does not start containers based on those images.
Beside this, does GitLab runner need docker?
In short, the gitlab-runner part of the command is replaced with docker run [docker options] gitlab/gitlab-runner , while the rest of the command stays as it is described in the register documentation. The only difference is that the gitlab-runner command is executed inside of a Docker container.
Does GitLab use docker?
GitLab Runner can use Docker to run jobs on user provided images. This is possible with the use of Docker executor. The Docker executor when used with GitLab CI, connects to Docker Engine and runs each build in a separate and isolated container using the predefined image that is set up in .
How do I create a docker image?
How to Create a Docker Image From a Container
- Step 1: Create a Base Container. …
- Step 2: Inspect Images. …
- Step 3: Inspect Containers. …
- Step 4: Start the Container. …
- Step 5: Modify the Running Container. …
- Step 6: Create an Image From a Container. …
- Step 7: Tag the Image. …
- Step 8: Create Images With Tags.
How do I download an image from GitLab?
To download and run a container image hosted in the GitLab Container Registry: Copy the link to your container image: Go to your project or group’s Packages & Registries > Container Registry and find the image you want. Next to the image name, click the Copy button.
How do I run a Docker image in GitLab CI?
Use the shell executor
- Install GitLab Runner.
- On the server where GitLab Runner is installed, install Docker Engine. …
- Add the gitlab-runner user to the docker group: …
- Verify that gitlab-runner has access to Docker: …
- In GitLab, to verify that everything works, add docker info to .gitlab-ci.yml :
How does GitLab CI work?
Description. GitLab CI (Continuous Integration) service is a part of GitLab that build and test the software whenever developer pushes code to application. GitLab CD (Continuous Deployment) is a software service that places the changes of every code in the production which results in every day deployment of production.
What is a docker image vs container?
A Docker image packs up the application and environment required by the application to run, and a container is a running instance of the image. Images are the packing part of Docker, analogous to “source code” or a “program”. Containers are the execution part of Docker, analogous to a “process”.
What is a docker image?
A Docker container image is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries and settings.
What is Docker_auth_config?
DOCKER_AUTH_CONFIG works when you are trying to pull the image from your private repository. Here is the function that uses that config variable. That function is only used by getDockerImage function. So whenever you need to push your image inside your job’s script section, you need the docker login step before that.
What is GitLab CI token?
When a pipeline job is about to run, GitLab generates a unique token and injects it as the CI_JOB_TOKEN predefined variable. You can use a GitLab CI/CD job token to authenticate with specific API endpoints: Packages: Package Registry. Container Registry (the $CI_REGISTRY_PASSWORD is $CI_JOB_TOKEN ).