Easy Docker Image Transfer: A Quick Guide
Are you looking to seamlessly move Docker images from one machine to another? Docker provides a robust mechanism for packaging and distributing applications in the form of Docker images. However, when it comes to transferring these images between different environments or machines, it's essential to follow the right steps to ensure a smooth transition.
Here's a straightforward guide to help you copy Docker images from one machine to another effortlessly:
1. Save the Docker Image:
Use the docker save command to export the Docker image as a tar archive. This command packages the image and its layers into a single file for easy transfer.
docker save -o /path/to/save/image.tar image_name:tag
E.g.
docker images
2. Transfer the Image Archive:
Once the image is saved as a tar archive, transfer it to the target machine using your preferred method, such as SCP, FTP, or any other file transfer mechanism.
3. Load the Docker Image: On the target machine, use the docker load command to import the Docker image from the tar archive.
docker load -i /path/to/transferred/image.tar
E.g.
4. Optional: Tag the Image:
If needed, you can tag the loaded image with a different name or tag on the new machine using the docker tag command.
docker tag source_image:tag new_image:new_tag