docker login authenticates the Docker command-line client to a container registry. Docker Hub is the default registry used here, providing a place to host images before deployment. section 5.5
Use docker login as part of an image publishing or deployment workflow:
- Create a Docker Hub account and obtain a username. section 5.5
- Log in with docker login before pushing an image with docker push. section 5.5
- For private images in production, log in on the remote virtual machine through an SSH deployment step. section 7.3.3
Authenticate a production host
A GitHub Actions workflow can connect to the virtual machine and run: docker login -u $DH_USER -p ${{ secrets.DOCKERHUB_TOKEN }}. The host can then pull private images before Docker Compose starts the application.
