image not found

dfimage looks broken

workaround: use https://github.com/mrhavens/Dedockify

similar to #35

imageName=xxx/yyy:latest
docker pull $imageName
docker images # -> get image ID
imageId=zzzzzzzzzz

docker run --rm -v /var/run/docker.sock:/var/run/docker.sock ghcr.io/laniksj/dfimage $imageId
Traceback (most recent call last):
  File "/root/entrypoint.py", line 56, in <module>
    __main__ = MainObj()
  File "/root/entrypoint.py", line 16, in __init__
    self._get_image(argv[-1])
  File "/root/entrypoint.py", line 32, in _get_image
    raise ImageNotFound("Image {} not found\n".format(repo_tag))
__main__.ImageNotFound: Image zzzzzzzzzz not found

# compare: dedockify
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock mrhavens/dedockify $imageId
# -> ok. dockerfile is printed to stdout

# compare: dockerfile-from-image
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock centurylink/dockerfile-from-image $imageName
/usr/lib/ruby/gems/2.2.0/gems/docker-api-1.24.1/lib/docker/connection.rb:42:in `rescue in request': 400 Bad Request: malformed Host header (Docker::Error::ClientError)

[LanikSJ]

docker run --rm -v /var/run/docker.sock:/var/run/docker.sock ghcr.io/laniksj/dfimage ruby:latest 
Traceback (most recent call last):
  File "/root/entrypoint.py", line 56, in <module>
    __main__ = MainObj()
  File "/root/entrypoint.py", line 16, in __init__
    self._get_image(argv[-1])
  File "/root/entrypoint.py", line 32, in _get_image
    raise ImageNotFound("Image {} not found\n".format(repo_tag))
__main__.ImageNotFound: Image ruby:latest not found

You’ll need to have done a docker pull on ruby:latest before running the above command.

docker pull ruby:latest
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock ghcr.io/laniksj/dfimage ruby:latest

ghcr.io/laniksj/dfimage → dfimage

docker run --rm -v /var/run/docker.sock:/var/run/docker.sock dfimage ruby:latest
Unable to find image 'dfimage:latest' locally
docker: Error response from daemon: pull access denied for dfimage, repository does not exist or may require 'docker login': denied: requested access to the resource is denied.

That won’t work since the docker hub image isn’t hosted on docker.io namespace:

docker pull laniksj/dfimage

if you want the image that’s no longer being updated and doesn’t have the latest changes.

docker pull dfimage Using default tag: latest Error response from daemon: pull access denied for dfimage, repository does not exist or may require ‘docker login’: denied: requested access to the resource is denied

See above.

[LanikSJ]

can we catch __main__.ImageNotFound: Image ruby:latest not found and print something like “please run: docker pull ruby:latest”?

the uncaught exception makes it look like a bug

That’s a good idea I’ll look into adding that to the project.