How to fix docker command prompt

Question

When I start emacs -q and run M-x shell there is formatting error when connecting to docker container as follows,

$ docker container exec -it b3c85fd9c5eaa2e64fc5aac9025d1f9c3b3fe47ca39008f40ddd436338d755f5 bash
]0;root@b3c85fd9c5ea: /root@b3c85fd9c5ea:/# ls
ls
bin   dev  home  lib64  mnt  proc  run   srv  tmp  var
boot  etc  lib   media  opt  root  sbin  sys  usr
]0;root@b3c85fd9c5ea: /root@b3c85fd9c5ea:/#

Here is its screenshot

What's the value of the `PS1` environment variable in that container? — wasamasa, Apr 01 '20 at 08:03
I can recommend https://github.com/akermu/emacs-libvterm and https://github.com/Silex/docker.el for docker. — bertfred, Apr 01 '20 at 13:39
@wasamasa here is `echo $PS1` output `\[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\u@\h:\w\$` — phoxd, Apr 04 '20 at 06:02

score 1 · Accepted Answer · answered Apr 05 '20 at 07:24

Your value of PS1 contains ANSI escape codes that can only be processed correctly by a terminal emulator (like the built-in term.el or vterm), not by M-x shell or M-x eshell. Set it to something simpler like \u@\h:\w\$, this could be done with the -e switch for the docker-container-exec command.

score 0 · Answer 2 · answered Aug 09 '21 at 10:56

0

Use cd instead of docker attach. So, at the eshell prompt, instead of attaching to a running container with

$ docker attach  <container_id>

cd into it with

$ cd /docker:<container_id>:/

You'll get the full eshell experience with this method.

answered Aug 09 '21 at 10:56

mihai

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How to fix docker command prompt

2 Answers2