What should be done if a Docker container cannot start …

1 year ago
Noah Thompson
1 minute

If the Docker container fails to start and data cannot be exported directly, you can try the following methods:

  1. Use the docker cp command to copy data from the container to the host machine.
docker cp <container_id>:/path/to/data /path/to/host
  1. Use the “docker commit” command to save the data in the container as a new image, and then start a new container to export the data.
docker commit <container_id> new_image_name
docker run -v /path/to/host:/path/to/data new_image_name
  1. If the data of a container is stored in a volume, you can use the docker volume command to mount the volume to a temporary container and export the data.
docker create --name temp_container -v <volume_name>:/data busybox
docker cp temp_container:/data /path/to/host
docker rm temp_container

Using the above methods, you can export data from the container to the host machine for the purpose of backup or migration.

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