Docker Image Uploader

This project provides a straightforward guide to download an image via Docker Desktop and upload it to GitLab’s Container Registry using command-line instructions. Ensure Docker is running and that your GitLab account has access to the registry.

Prerequisites

1. Docker Desktop: Ensure Docker is installed and running.
2. GitLab Access: You should have credentials for GitLab. If using two-factor authentication (2FA), use a personal access token instead of a password.

Steps

1. Authenticate to the GitLab Container Registry

To push images to GitLab, log in to the Container Registry:

docker login gitlab.rc.uab.edu:4567

If you use 2FA, replace your password with a personal access token.

2. Download or Pull an Image (Optional)

If you want to download an existing image from Docker Hub or another registry, use:

docker pull <image_name>:<tag>

Replace <image_name>: with the actual image name and tag you need.

3. Tag the Image for GitLab Registry

To prepare the image for upload to GitLab’s registry, assign it a tag in the following format:

docker tag <local_image_name>:<tag> gitlab.rc.uab.edu:4567/<your_gitlab_namespace>/<project_name>:<tag>

Replace:

<local_image_name> and with the local image name and tag. <your_gitlab_namespace>/<project_name> with your actual GitLab project path.

4. Push the Image to GitLab’s Container Registry

Upload the image with the docker push command:

docker push gitlab.rc.uab.edu:4567/<your_gitlab_namespace>/<project_name>:<tag>