Backup and transfer to other host

[SimonBard]

Operating system

22.04

Description

What is the best way to backup a docker container and transfer to new host?

I see this possibilities:
- docker way

1. docker commit NAME_OF_INSTANCE mycontainerimage
2. docker save -o mycontainerimage.tar mycontainerimage
3. docker load -i ./mycontainerimage.tar
4. docker create --name my-nginx-container -p 8080:80 mycontainerimage
5. docker start my-nginx-container

Apple way:

• Somehow backup the apple system with system tools (I dont know yet) and restore when running a new docker container

Docker compose

not relevant

Docker log

not relevant

Screenshots (optional)

No response

[kroese]

Committing to the image will not work. But its written in the readme how to do it:

volumes:
  - /var/osx:/storage

And then just backup the example /var/osx folder and transfer it to the new PC.

[SimonBard]

Thanks, I cannot get it running though. I copied the content of the volume created by docker to Downloads and tried to start a container:

This is how the directory looks like:

$ ls -lh /home/simon/Downloads/macos-backup/_data
insgesamt 24G
-rw-r--r-- 1 root root 638M Okt 13 21:05 base.dmg
-rw-r--r-- 1 root root 256M Okt 13 21:05 boot.img
-rw-r--r-- 1 root root    9 Okt 13 21:05 boot.version
-rw-r--r-- 1 root root  64G Okt 17 08:40 data.img
-rw-r--r-- 1 root root   18 Okt 13 21:05 macos.mac
-rw-r--r-- 1 root root 1,9M Okt 13 21:05 macos.rom
-rw-r--r-- 1 root root 128K Okt 16 13:56 macos.vars
-rw-r--r-- 1 root root    8 Okt 13 21:05 macos.version

Startup & error:

~/Downloads/macos$ docker-compose up -d
WARNING: Found orphan containers (4553fbfe403c_macos) for this project. If you removed or renamed this service in your compose file, you can run this command with the --remove-orphans flag to clean it up.
Recreating macos ...

ERROR: for macos  'ContainerConfig'

ERROR: for macos2  'ContainerConfig'
Traceback (most recent call last):
  File "/usr/bin/docker-compose", line 33, in <module>
    sys.exit(load_entry_point('docker-compose==1.29.2', 'console_scripts', 'docker-compose')())
  File "/usr/lib/python3/dist-packages/compose/cli/main.py", line 81, in main
    command_func()
  File "/usr/lib/python3/dist-packages/compose/cli/main.py", line 203, in perform_command
    handler(command, command_options)
  File "/usr/lib/python3/dist-packages/compose/metrics/decorator.py", line 18, in wrapper
    result = fn(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/compose/cli/main.py", line 1186, in up
    to_attach = up(False)
  File "/usr/lib/python3/dist-packages/compose/cli/main.py", line 1166, in up
    return self.project.up(
  File "/usr/lib/python3/dist-packages/compose/project.py", line 697, in up
    results, errors = parallel.parallel_execute(
  File "/usr/lib/python3/dist-packages/compose/parallel.py", line 108, in parallel_execute
    raise error_to_reraise
  File "/usr/lib/python3/dist-packages/compose/parallel.py", line 206, in producer
    result = func(obj)
  File "/usr/lib/python3/dist-packages/compose/project.py", line 679, in do
    return service.execute_convergence_plan(
  File "/usr/lib/python3/dist-packages/compose/service.py", line 579, in execute_convergence_plan
    return self._execute_convergence_recreate(
  File "/usr/lib/python3/dist-packages/compose/service.py", line 499, in _execute_convergence_recreate
    containers, errors = parallel_execute(
  File "/usr/lib/python3/dist-packages/compose/parallel.py", line 108, in parallel_execute
    raise error_to_reraise
  File "/usr/lib/python3/dist-packages/compose/parallel.py", line 206, in producer
    result = func(obj)
  File "/usr/lib/python3/dist-packages/compose/service.py", line 494, in recreate
    return self.recreate_container(
  File "/usr/lib/python3/dist-packages/compose/service.py", line 612, in recreate_container
    new_container = self.create_container(
  File "/usr/lib/python3/dist-packages/compose/service.py", line 330, in create_container
    container_options = self._get_container_create_options(
  File "/usr/lib/python3/dist-packages/compose/service.py", line 921, in _get_container_create_options
    container_options, override_options = self._build_container_volume_options(
  File "/usr/lib/python3/dist-packages/compose/service.py", line 960, in _build_container_volume_options
    binds, affinity = merge_volume_bindings(
  File "/usr/lib/python3/dist-packages/compose/service.py", line 1548, in merge_volume_bindings
    old_volumes, old_mounts = get_container_data_volumes(
  File "/usr/lib/python3/dist-packages/compose/service.py", line 1579, in get_container_data_volumes
    container.image_config['ContainerConfig'].get('Volumes') or {}
KeyError: 'ContainerConfig'

This is the docker compose:

services:
  macos:
    image: dockurr/macos
    container_name: macos
    environment:
      VERSION: "big-sur"
    devices:
      - /dev/kvm
    cap_add:
      - NET_ADMIN
    ports:
      - 8006:8006
      - 5900:5900/tcp
      - 5900:5900/udp
    stop_grace_period: 2m
    volumes:
      - /var/osx/_data:/storage

[kroese]

When I google for that error, all the posts say to use docker compose up instead of docker-compose up